/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.cal132.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 15:34:37,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 15:34:37,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 15:34:37,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 15:34:37,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 15:34:37,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 15:34:37,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 15:34:37,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 15:34:37,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 15:34:37,690 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 15:34:37,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 15:34:37,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 15:34:37,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 15:34:37,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 15:34:37,692 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 15:34:37,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 15:34:37,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 15:34:37,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 15:34:37,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 15:34:37,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 15:34:37,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 15:34:37,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 15:34:37,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 15:34:37,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 15:34:37,693 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 15:34:37,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 15:34:37,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 15:34:37,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 15:34:37,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 15:34:37,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 15:34:37,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 15:34:37,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 15:34:37,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 15:34:37,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 15:34:37,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 15:34:37,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 15:34:37,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 15:34:37,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 15:34:37,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 15:34:37,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 15:34:37,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 15:34:37,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 15:34:37,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 15:34:37,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 15:34:37,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 15:34:37,903 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 15:34:37,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal132.c [2023-12-25 15:34:38,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 15:34:39,473 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 15:34:39,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal132.c [2023-12-25 15:34:39,528 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169c672e7/dd3e85612812496d95ad809ed78f7b87/FLAG23c85028c [2023-12-25 15:34:39,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169c672e7/dd3e85612812496d95ad809ed78f7b87 [2023-12-25 15:34:39,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 15:34:39,549 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 15:34:39,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 15:34:39,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 15:34:39,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 15:34:39,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 03:34:39" (1/1) ... [2023-12-25 15:34:39,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d24e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:39, skipping insertion in model container [2023-12-25 15:34:39,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 03:34:39" (1/1) ... [2023-12-25 15:34:39,720 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 15:34:40,024 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.cal132.c[1246,1259] [2023-12-25 15:34:41,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 15:34:41,339 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 15:34:41,346 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.cal132.c[1246,1259] [2023-12-25 15:34:42,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 15:34:42,275 INFO L206 MainTranslator]: Completed translation [2023-12-25 15:34:42,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42 WrapperNode [2023-12-25 15:34:42,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 15:34:42,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 15:34:42,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 15:34:42,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 15:34:42,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:42,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:46,251 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58238 [2023-12-25 15:34:46,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 15:34:46,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 15:34:46,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 15:34:46,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 15:34:46,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:46,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:47,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:48,113 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]. [2023-12-25 15:34:48,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:48,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:49,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:49,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:49,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:50,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:50,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 15:34:50,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 15:34:50,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 15:34:50,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 15:34:50,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (1/1) ... [2023-12-25 15:34:50,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 15:34:50,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:34:50,898 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) [2023-12-25 15:34:50,925 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 [2023-12-25 15:34:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 15:34:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 15:34:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 15:34:50,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 15:34:52,971 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 15:34:52,972 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 15:35:20,802 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 15:35:21,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 15:35:21,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 15:35:21,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 03:35:21 BoogieIcfgContainer [2023-12-25 15:35:21,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 15:35:21,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 15:35:21,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 15:35:21,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 15:35:21,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 03:34:39" (1/3) ... [2023-12-25 15:35:21,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f04e3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 03:35:21, skipping insertion in model container [2023-12-25 15:35:21,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:34:42" (2/3) ... [2023-12-25 15:35:21,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f04e3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 03:35:21, skipping insertion in model container [2023-12-25 15:35:21,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 03:35:21" (3/3) ... [2023-12-25 15:35:21,441 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal132.c [2023-12-25 15:35:21,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 15:35:21,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 15:35:21,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 15:35:21,578 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;@2e72a73b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 15:35:21,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 15:35:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 12122 states, 12120 states have (on average 1.6672442244224421) internal successors, (20207), 12121 states have internal predecessors, (20207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-25 15:35:21,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:35:21,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:35:21,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:35:21,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:35:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -377515869, now seen corresponding path program 1 times [2023-12-25 15:35:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:35:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319603727] [2023-12-25 15:35:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:35:22,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:35:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892742436] [2023-12-25 15:35:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:22,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:22,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:35:22,377 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) [2023-12-25 15:35:22,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 15:35:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:35:26,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 15:35:26,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:35:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:35:27,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:35:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:35:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319603727] [2023-12-25 15:35:27,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:35:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892742436] [2023-12-25 15:35:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892742436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:35:27,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:35:27,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:35:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351661677] [2023-12-25 15:35:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:35:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:35:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:35:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:35:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:35:27,283 INFO L87 Difference]: Start difference. First operand has 12122 states, 12120 states have (on average 1.6672442244224421) internal successors, (20207), 12121 states have internal predecessors, (20207), 0 states have call successors, (0), 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 123.75) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:35:29,127 INFO L93 Difference]: Finished difference Result 23959 states and 39942 transitions. [2023-12-25 15:35:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:35:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 495 [2023-12-25 15:35:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:35:29,175 INFO L225 Difference]: With dead ends: 23959 [2023-12-25 15:35:29,176 INFO L226 Difference]: Without dead ends: 12120 [2023-12-25 15:35:29,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:35:29,194 INFO L413 NwaCegarLoop]: 19317 mSDtfsCounter, 19949 mSDsluCounter, 19316 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19949 SdHoareTripleChecker+Valid, 38633 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:35:29,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19949 Valid, 38633 Invalid, 1761 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 15:35:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12120 states. [2023-12-25 15:35:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12120 to 12120. [2023-12-25 15:35:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12120 states, 12119 states have (on average 1.6666391616470007) internal successors, (20198), 12119 states have internal predecessors, (20198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12120 states to 12120 states and 20198 transitions. [2023-12-25 15:35:29,439 INFO L78 Accepts]: Start accepts. Automaton has 12120 states and 20198 transitions. Word has length 495 [2023-12-25 15:35:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:35:29,442 INFO L495 AbstractCegarLoop]: Abstraction has 12120 states and 20198 transitions. [2023-12-25 15:35:29,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 12120 states and 20198 transitions. [2023-12-25 15:35:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-25 15:35:29,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:35:29,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:35:29,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 15:35:29,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-25 15:35:29,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:35:29,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:35:29,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1033395737, now seen corresponding path program 1 times [2023-12-25 15:35:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:35:29,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543074593] [2023-12-25 15:35:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:29,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:35:29,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:35:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077780230] [2023-12-25 15:35:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:29,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:29,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:35:29,862 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) [2023-12-25 15:35:29,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 15:35:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:35:33,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 15:35:33,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:35:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:35:34,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:35:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:35:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543074593] [2023-12-25 15:35:34,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:35:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077780230] [2023-12-25 15:35:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077780230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:35:34,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:35:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:35:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209773909] [2023-12-25 15:35:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:35:34,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:35:34,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:35:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:35:34,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:35:34,326 INFO L87 Difference]: Start difference. First operand 12120 states and 20198 transitions. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:35:36,267 INFO L93 Difference]: Finished difference Result 23957 states and 39925 transitions. [2023-12-25 15:35:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:35:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 496 [2023-12-25 15:35:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:35:36,315 INFO L225 Difference]: With dead ends: 23957 [2023-12-25 15:35:36,315 INFO L226 Difference]: Without dead ends: 12120 [2023-12-25 15:35:36,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:35:36,334 INFO L413 NwaCegarLoop]: 19335 mSDtfsCounter, 19820 mSDsluCounter, 38668 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19820 SdHoareTripleChecker+Valid, 58003 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:35:36,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19820 Valid, 58003 Invalid, 2581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 15:35:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12120 states. [2023-12-25 15:35:36,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12120 to 12120. [2023-12-25 15:35:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12120 states, 12119 states have (on average 1.6664741315290041) internal successors, (20196), 12119 states have internal predecessors, (20196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12120 states to 12120 states and 20196 transitions. [2023-12-25 15:35:36,661 INFO L78 Accepts]: Start accepts. Automaton has 12120 states and 20196 transitions. Word has length 496 [2023-12-25 15:35:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:35:36,664 INFO L495 AbstractCegarLoop]: Abstraction has 12120 states and 20196 transitions. [2023-12-25 15:35:36,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand 12120 states and 20196 transitions. [2023-12-25 15:35:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-25 15:35:36,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:35:36,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:35:36,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 15:35:36,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-25 15:35:36,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:35:36,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:35:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1685790447, now seen corresponding path program 1 times [2023-12-25 15:35:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:35:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799866322] [2023-12-25 15:35:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:35:37,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:35:37,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071311354] [2023-12-25 15:35:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:37,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:35:37,101 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) [2023-12-25 15:35:37,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 15:35:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:35:40,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 15:35:40,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:35:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:35:41,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:35:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:35:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799866322] [2023-12-25 15:35:41,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:35:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071311354] [2023-12-25 15:35:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071311354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:35:41,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:35:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:35:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363906603] [2023-12-25 15:35:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:35:41,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 15:35:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:35:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 15:35:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:35:41,359 INFO L87 Difference]: Start difference. First operand 12120 states and 20196 transitions. Second operand has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:35:44,212 INFO L93 Difference]: Finished difference Result 35794 states and 59646 transitions. [2023-12-25 15:35:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:35:44,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 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 497 [2023-12-25 15:35:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:35:44,245 INFO L225 Difference]: With dead ends: 35794 [2023-12-25 15:35:44,246 INFO L226 Difference]: Without dead ends: 23957 [2023-12-25 15:35:44,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-25 15:35:44,263 INFO L413 NwaCegarLoop]: 20054 mSDtfsCounter, 58764 mSDsluCounter, 79511 mSDsCounter, 0 mSdLazyCounter, 4453 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58764 SdHoareTripleChecker+Valid, 99565 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:35:44,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58764 Valid, 99565 Invalid, 4458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 4453 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 15:35:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23957 states. [2023-12-25 15:35:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23957 to 12124. [2023-12-25 15:35:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12124 states, 12123 states have (on average 1.6662542275014436) internal successors, (20200), 12123 states have internal predecessors, (20200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12124 states to 12124 states and 20200 transitions. [2023-12-25 15:35:44,546 INFO L78 Accepts]: Start accepts. Automaton has 12124 states and 20200 transitions. Word has length 497 [2023-12-25 15:35:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:35:44,547 INFO L495 AbstractCegarLoop]: Abstraction has 12124 states and 20200 transitions. [2023-12-25 15:35:44,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 12124 states and 20200 transitions. [2023-12-25 15:35:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-25 15:35:44,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:35:44,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:35:44,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 15:35:44,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:44,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:35:44,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:35:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -998812629, now seen corresponding path program 1 times [2023-12-25 15:35:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:35:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306269688] [2023-12-25 15:35:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:35:44,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:35:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299757829] [2023-12-25 15:35:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:35:44,981 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) [2023-12-25 15:35:45,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 15:35:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:35:48,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:35:48,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:35:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:35:49,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:35:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:35:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306269688] [2023-12-25 15:35:49,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:35:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299757829] [2023-12-25 15:35:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299757829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:35:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:35:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:35:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986418758] [2023-12-25 15:35:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:35:49,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:35:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:35:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:35:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:35:49,157 INFO L87 Difference]: Start difference. First operand 12124 states and 20200 transitions. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:35:49,577 INFO L93 Difference]: Finished difference Result 23965 states and 39929 transitions. [2023-12-25 15:35:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:35:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 499 [2023-12-25 15:35:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:35:49,594 INFO L225 Difference]: With dead ends: 23965 [2023-12-25 15:35:49,594 INFO L226 Difference]: Without dead ends: 12124 [2023-12-25 15:35:49,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:35:49,608 INFO L413 NwaCegarLoop]: 20021 mSDtfsCounter, 19948 mSDsluCounter, 20020 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19948 SdHoareTripleChecker+Valid, 40041 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:35:49,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19948 Valid, 40041 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:35:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2023-12-25 15:35:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 12124. [2023-12-25 15:35:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12124 states, 12123 states have (on average 1.6660892518353543) internal successors, (20198), 12123 states have internal predecessors, (20198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12124 states to 12124 states and 20198 transitions. [2023-12-25 15:35:49,747 INFO L78 Accepts]: Start accepts. Automaton has 12124 states and 20198 transitions. Word has length 499 [2023-12-25 15:35:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:35:49,747 INFO L495 AbstractCegarLoop]: Abstraction has 12124 states and 20198 transitions. [2023-12-25 15:35:49,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12124 states and 20198 transitions. [2023-12-25 15:35:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-12-25 15:35:49,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:35:49,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:35:49,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-25 15:35:49,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:49,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:35:49,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:35:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash 501358833, now seen corresponding path program 1 times [2023-12-25 15:35:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:35:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226152830] [2023-12-25 15:35:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:35:50,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:35:50,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651802907] [2023-12-25 15:35:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:50,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:50,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:35:50,152 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) [2023-12-25 15:35:50,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 15:35:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:35:53,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:35:53,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:35:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:35:54,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:35:54,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:35:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226152830] [2023-12-25 15:35:54,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:35:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651802907] [2023-12-25 15:35:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651802907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:35:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:35:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:35:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029350644] [2023-12-25 15:35:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:35:54,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:35:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:35:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:35:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:35:54,328 INFO L87 Difference]: Start difference. First operand 12124 states and 20198 transitions. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:35:54,940 INFO L93 Difference]: Finished difference Result 23965 states and 39925 transitions. [2023-12-25 15:35:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:35:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 500 [2023-12-25 15:35:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:35:54,951 INFO L225 Difference]: With dead ends: 23965 [2023-12-25 15:35:54,951 INFO L226 Difference]: Without dead ends: 12124 [2023-12-25 15:35:54,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:35:54,959 INFO L413 NwaCegarLoop]: 20021 mSDtfsCounter, 20067 mSDsluCounter, 40040 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20067 SdHoareTripleChecker+Valid, 60061 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:35:54,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20067 Valid, 60061 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:35:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2023-12-25 15:35:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 12124. [2023-12-25 15:35:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12124 states, 12123 states have (on average 1.6660067640023097) internal successors, (20197), 12123 states have internal predecessors, (20197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12124 states to 12124 states and 20197 transitions. [2023-12-25 15:35:55,103 INFO L78 Accepts]: Start accepts. Automaton has 12124 states and 20197 transitions. Word has length 500 [2023-12-25 15:35:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:35:55,103 INFO L495 AbstractCegarLoop]: Abstraction has 12124 states and 20197 transitions. [2023-12-25 15:35:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:35:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12124 states and 20197 transitions. [2023-12-25 15:35:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 15:35:55,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:35:55,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:35:55,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 15:35:55,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:55,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:35:55,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:35:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2038235423, now seen corresponding path program 1 times [2023-12-25 15:35:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:35:55,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043575588] [2023-12-25 15:35:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:35:55,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:35:55,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520876984] [2023-12-25 15:35:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:35:55,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:35:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:35:55,494 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) [2023-12-25 15:35:55,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 15:35:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:35:58,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:35:58,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:35:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:35:59,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:35:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:35:59,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043575588] [2023-12-25 15:35:59,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:35:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520876984] [2023-12-25 15:35:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520876984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:35:59,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:35:59,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:35:59,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977782020] [2023-12-25 15:35:59,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:35:59,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:35:59,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:35:59,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:35:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:35:59,438 INFO L87 Difference]: Start difference. First operand 12124 states and 20197 transitions. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:00,092 INFO L93 Difference]: Finished difference Result 23965 states and 39923 transitions. [2023-12-25 15:36:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:36:00,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2023-12-25 15:36:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:00,108 INFO L225 Difference]: With dead ends: 23965 [2023-12-25 15:36:00,109 INFO L226 Difference]: Without dead ends: 12124 [2023-12-25 15:36:00,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:36:00,120 INFO L413 NwaCegarLoop]: 20021 mSDtfsCounter, 20064 mSDsluCounter, 40040 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20064 SdHoareTripleChecker+Valid, 60061 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:00,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20064 Valid, 60061 Invalid, 510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 15:36:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2023-12-25 15:36:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 12124. [2023-12-25 15:36:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12124 states, 12123 states have (on average 1.665924276169265) internal successors, (20196), 12123 states have internal predecessors, (20196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12124 states to 12124 states and 20196 transitions. [2023-12-25 15:36:00,242 INFO L78 Accepts]: Start accepts. Automaton has 12124 states and 20196 transitions. Word has length 501 [2023-12-25 15:36:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:00,243 INFO L495 AbstractCegarLoop]: Abstraction has 12124 states and 20196 transitions. [2023-12-25 15:36:00,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 12124 states and 20196 transitions. [2023-12-25 15:36:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 15:36:00,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:00,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:00,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-25 15:36:00,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:00,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:00,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1176401821, now seen corresponding path program 1 times [2023-12-25 15:36:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:00,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676859112] [2023-12-25 15:36:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:00,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:00,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108241138] [2023-12-25 15:36:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:00,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:00,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:00,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:00,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 15:36:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:03,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-25 15:36:04,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:04,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:04,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676859112] [2023-12-25 15:36:04,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108241138] [2023-12-25 15:36:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108241138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:04,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:04,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 15:36:04,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100305157] [2023-12-25 15:36:04,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:04,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 15:36:04,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:05,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 15:36:05,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:36:05,000 INFO L87 Difference]: Start difference. First operand 12124 states and 20196 transitions. Second operand has 12 states, 12 states have (on average 41.75) internal successors, (501), 11 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:07,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:07,621 INFO L93 Difference]: Finished difference Result 59842 states and 99670 transitions. [2023-12-25 15:36:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 15:36:07,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 41.75) internal successors, (501), 11 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2023-12-25 15:36:07,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:07,659 INFO L225 Difference]: With dead ends: 59842 [2023-12-25 15:36:07,660 INFO L226 Difference]: Without dead ends: 48001 [2023-12-25 15:36:07,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 15:36:07,676 INFO L413 NwaCegarLoop]: 40254 mSDtfsCounter, 157816 mSDsluCounter, 301529 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157816 SdHoareTripleChecker+Valid, 341783 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157816 Valid, 341783 Invalid, 713 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [5 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 15:36:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48001 states. [2023-12-25 15:36:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48001 to 12304. [2023-12-25 15:36:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12304 states, 12303 states have (on average 1.6651223278875071) internal successors, (20486), 12303 states have internal predecessors, (20486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 20486 transitions. [2023-12-25 15:36:08,039 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 20486 transitions. Word has length 501 [2023-12-25 15:36:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:08,040 INFO L495 AbstractCegarLoop]: Abstraction has 12304 states and 20486 transitions. [2023-12-25 15:36:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.75) internal successors, (501), 11 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 20486 transitions. [2023-12-25 15:36:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 15:36:08,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:08,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:08,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:08,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:08,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:08,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1284712817, now seen corresponding path program 1 times [2023-12-25 15:36:08,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:08,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094096646] [2023-12-25 15:36:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:08,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:08,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:08,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988077980] [2023-12-25 15:36:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:08,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:08,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:08,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:08,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 15:36:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:11,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 15:36:11,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:11,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094096646] [2023-12-25 15:36:11,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988077980] [2023-12-25 15:36:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988077980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:11,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:36:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501068354] [2023-12-25 15:36:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:11,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:36:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:36:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:36:11,446 INFO L87 Difference]: Start difference. First operand 12304 states and 20486 transitions. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:11,593 INFO L93 Difference]: Finished difference Result 24326 states and 40503 transitions. [2023-12-25 15:36:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:36:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2023-12-25 15:36:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:11,606 INFO L225 Difference]: With dead ends: 24326 [2023-12-25 15:36:11,606 INFO L226 Difference]: Without dead ends: 12305 [2023-12-25 15:36:11,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:36:11,616 INFO L413 NwaCegarLoop]: 20190 mSDtfsCounter, 6 mSDsluCounter, 20180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40370 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:11,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40370 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:36:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2023-12-25 15:36:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 12304. [2023-12-25 15:36:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12304 states, 12303 states have (on average 1.6650410468991304) internal successors, (20485), 12303 states have internal predecessors, (20485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 20485 transitions. [2023-12-25 15:36:11,751 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 20485 transitions. Word has length 501 [2023-12-25 15:36:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:11,751 INFO L495 AbstractCegarLoop]: Abstraction has 12304 states and 20485 transitions. [2023-12-25 15:36:11,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 20485 transitions. [2023-12-25 15:36:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-25 15:36:11,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:11,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:11,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:11,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-25 15:36:11,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:11,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:11,973 INFO L85 PathProgramCache]: Analyzing trace with hash 32530453, now seen corresponding path program 1 times [2023-12-25 15:36:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247897076] [2023-12-25 15:36:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:12,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:12,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533459417] [2023-12-25 15:36:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:12,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:12,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:12,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:12,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 15:36:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:15,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 15:36:15,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:15,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:15,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247897076] [2023-12-25 15:36:15,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:15,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533459417] [2023-12-25 15:36:15,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533459417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:15,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:15,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:36:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784099620] [2023-12-25 15:36:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:36:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:36:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:36:15,701 INFO L87 Difference]: Start difference. First operand 12304 states and 20485 transitions. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:15,848 INFO L93 Difference]: Finished difference Result 24327 states and 40502 transitions. [2023-12-25 15:36:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:36:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2023-12-25 15:36:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:15,861 INFO L225 Difference]: With dead ends: 24327 [2023-12-25 15:36:15,861 INFO L226 Difference]: Without dead ends: 12306 [2023-12-25 15:36:15,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:36:15,872 INFO L413 NwaCegarLoop]: 20190 mSDtfsCounter, 6 mSDsluCounter, 20180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40370 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:15,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40370 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:36:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12306 states. [2023-12-25 15:36:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12306 to 12305. [2023-12-25 15:36:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12305 states, 12304 states have (on average 1.6649869960988297) internal successors, (20486), 12304 states have internal predecessors, (20486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12305 states to 12305 states and 20486 transitions. [2023-12-25 15:36:16,007 INFO L78 Accepts]: Start accepts. Automaton has 12305 states and 20486 transitions. Word has length 501 [2023-12-25 15:36:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:16,008 INFO L495 AbstractCegarLoop]: Abstraction has 12305 states and 20486 transitions. [2023-12-25 15:36:16,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 12305 states and 20486 transitions. [2023-12-25 15:36:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 15:36:16,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:16,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:16,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:16,318 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:16,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1329416771, now seen corresponding path program 1 times [2023-12-25 15:36:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989946679] [2023-12-25 15:36:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:16,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090676059] [2023-12-25 15:36:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:16,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:16,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:16,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 15:36:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:19,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 15:36:19,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:20,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:20,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989946679] [2023-12-25 15:36:20,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090676059] [2023-12-25 15:36:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090676059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:20,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:20,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:36:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800582388] [2023-12-25 15:36:20,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:20,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 15:36:20,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 15:36:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:36:20,654 INFO L87 Difference]: Start difference. First operand 12305 states and 20486 transitions. Second operand has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 9 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:22,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:22,324 INFO L93 Difference]: Finished difference Result 61331 states and 102075 transitions. [2023-12-25 15:36:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 15:36:22,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 9 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2023-12-25 15:36:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:22,369 INFO L225 Difference]: With dead ends: 61331 [2023-12-25 15:36:22,369 INFO L226 Difference]: Without dead ends: 49306 [2023-12-25 15:36:22,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-25 15:36:22,387 INFO L413 NwaCegarLoop]: 40305 mSDtfsCounter, 177067 mSDsluCounter, 142052 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177067 SdHoareTripleChecker+Valid, 182357 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:22,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177067 Valid, 182357 Invalid, 297 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:36:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49306 states. [2023-12-25 15:36:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49306 to 12641. [2023-12-25 15:36:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12641 states, 12640 states have (on average 1.664003164556962) internal successors, (21033), 12640 states have internal predecessors, (21033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12641 states to 12641 states and 21033 transitions. [2023-12-25 15:36:22,706 INFO L78 Accepts]: Start accepts. Automaton has 12641 states and 21033 transitions. Word has length 502 [2023-12-25 15:36:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:22,706 INFO L495 AbstractCegarLoop]: Abstraction has 12641 states and 21033 transitions. [2023-12-25 15:36:22,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 9 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 12641 states and 21033 transitions. [2023-12-25 15:36:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 15:36:22,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:22,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:22,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:22,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-25 15:36:22,917 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:22,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1068206953, now seen corresponding path program 1 times [2023-12-25 15:36:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441083134] [2023-12-25 15:36:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:23,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:23,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859146062] [2023-12-25 15:36:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:23,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:23,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:23,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:23,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 15:36:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:26,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-25 15:36:26,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:28,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441083134] [2023-12-25 15:36:28,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859146062] [2023-12-25 15:36:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859146062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:28,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:28,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:36:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896282132] [2023-12-25 15:36:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 15:36:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 15:36:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:36:28,452 INFO L87 Difference]: Start difference. First operand 12641 states and 21033 transitions. Second operand has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:43,034 INFO L93 Difference]: Finished difference Result 37454 states and 62316 transitions. [2023-12-25 15:36:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 15:36:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2023-12-25 15:36:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:43,056 INFO L225 Difference]: With dead ends: 37454 [2023-12-25 15:36:43,057 INFO L226 Difference]: Without dead ends: 25096 [2023-12-25 15:36:43,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-25 15:36:43,067 INFO L413 NwaCegarLoop]: 33906 mSDtfsCounter, 39822 mSDsluCounter, 153235 mSDsCounter, 0 mSdLazyCounter, 34129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39822 SdHoareTripleChecker+Valid, 187141 SdHoareTripleChecker+Invalid, 34133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:43,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39822 Valid, 187141 Invalid, 34133 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [4 Valid, 34129 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2023-12-25 15:36:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25096 states. [2023-12-25 15:36:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25096 to 12647. [2023-12-25 15:36:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12647 states, 12646 states have (on average 1.6637671991143446) internal successors, (21040), 12646 states have internal predecessors, (21040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12647 states to 12647 states and 21040 transitions. [2023-12-25 15:36:43,244 INFO L78 Accepts]: Start accepts. Automaton has 12647 states and 21040 transitions. Word has length 502 [2023-12-25 15:36:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:43,244 INFO L495 AbstractCegarLoop]: Abstraction has 12647 states and 21040 transitions. [2023-12-25 15:36:43,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 12647 states and 21040 transitions. [2023-12-25 15:36:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 15:36:43,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:43,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:43,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-25 15:36:43,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:43,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 47138599, now seen corresponding path program 1 times [2023-12-25 15:36:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952184788] [2023-12-25 15:36:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:43,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:43,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517418796] [2023-12-25 15:36:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:43,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:43,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:43,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:43,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 15:36:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:46,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 15:36:46,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:47,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952184788] [2023-12-25 15:36:47,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517418796] [2023-12-25 15:36:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517418796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:47,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:36:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43860282] [2023-12-25 15:36:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:47,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:36:47,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:36:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:36:47,396 INFO L87 Difference]: Start difference. First operand 12647 states and 21040 transitions. Second operand has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 12 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:49,497 INFO L93 Difference]: Finished difference Result 48395 states and 80548 transitions. [2023-12-25 15:36:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 15:36:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 12 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2023-12-25 15:36:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:49,543 INFO L225 Difference]: With dead ends: 48395 [2023-12-25 15:36:49,543 INFO L226 Difference]: Without dead ends: 36031 [2023-12-25 15:36:49,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 15:36:49,565 INFO L413 NwaCegarLoop]: 39555 mSDtfsCounter, 99225 mSDsluCounter, 297551 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99225 SdHoareTripleChecker+Valid, 337106 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:49,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99225 Valid, 337106 Invalid, 739 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 15:36:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36031 states. [2023-12-25 15:36:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36031 to 12483. [2023-12-25 15:36:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12483 states, 12482 states have (on average 1.6640762698285532) internal successors, (20771), 12482 states have internal predecessors, (20771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12483 states to 12483 states and 20771 transitions. [2023-12-25 15:36:49,870 INFO L78 Accepts]: Start accepts. Automaton has 12483 states and 20771 transitions. Word has length 502 [2023-12-25 15:36:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:49,871 INFO L495 AbstractCegarLoop]: Abstraction has 12483 states and 20771 transitions. [2023-12-25 15:36:49,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.61538461538461) internal successors, (502), 12 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12483 states and 20771 transitions. [2023-12-25 15:36:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 15:36:49,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:49,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:49,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:50,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-25 15:36:50,076 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:50,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1090516625, now seen corresponding path program 1 times [2023-12-25 15:36:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736674179] [2023-12-25 15:36:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:50,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865583417] [2023-12-25 15:36:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:50,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:50,330 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:50,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 15:36:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:53,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 15:36:53,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:54,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:54,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:54,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736674179] [2023-12-25 15:36:54,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:54,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865583417] [2023-12-25 15:36:54,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865583417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:54,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:54,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:36:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048768795] [2023-12-25 15:36:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:54,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:36:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:36:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:36:54,030 INFO L87 Difference]: Start difference. First operand 12483 states and 20771 transitions. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:54,498 INFO L93 Difference]: Finished difference Result 24690 states and 41080 transitions. [2023-12-25 15:36:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:36:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2023-12-25 15:36:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:54,509 INFO L225 Difference]: With dead ends: 24690 [2023-12-25 15:36:54,509 INFO L226 Difference]: Without dead ends: 12490 [2023-12-25 15:36:54,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:36:54,519 INFO L413 NwaCegarLoop]: 20163 mSDtfsCounter, 19837 mSDsluCounter, 60476 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19837 SdHoareTripleChecker+Valid, 80639 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:54,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19837 Valid, 80639 Invalid, 129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 15:36:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12490 states. [2023-12-25 15:36:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12490 to 12488. [2023-12-25 15:36:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12488 states, 12487 states have (on average 1.6638103627772884) internal successors, (20776), 12487 states have internal predecessors, (20776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12488 states to 12488 states and 20776 transitions. [2023-12-25 15:36:54,661 INFO L78 Accepts]: Start accepts. Automaton has 12488 states and 20776 transitions. Word has length 502 [2023-12-25 15:36:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:54,661 INFO L495 AbstractCegarLoop]: Abstraction has 12488 states and 20776 transitions. [2023-12-25 15:36:54,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12488 states and 20776 transitions. [2023-12-25 15:36:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-25 15:36:54,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:54,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:54,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:54,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-25 15:36:54,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:54,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1751569313, now seen corresponding path program 1 times [2023-12-25 15:36:54,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:54,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165143646] [2023-12-25 15:36:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:54,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:55,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:55,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003429768] [2023-12-25 15:36:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:55,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:55,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:55,066 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:55,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 15:36:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:36:58,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 15:36:58,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:36:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:36:58,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:36:58,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:36:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165143646] [2023-12-25 15:36:58,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:36:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003429768] [2023-12-25 15:36:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003429768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:36:58,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:36:58,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:36:58,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111237284] [2023-12-25 15:36:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:36:58,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:36:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:36:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:36:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:36:58,707 INFO L87 Difference]: Start difference. First operand 12488 states and 20776 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:36:58,857 INFO L93 Difference]: Finished difference Result 24695 states and 41084 transitions. [2023-12-25 15:36:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:36:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2023-12-25 15:36:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:36:58,868 INFO L225 Difference]: With dead ends: 24695 [2023-12-25 15:36:58,868 INFO L226 Difference]: Without dead ends: 12490 [2023-12-25 15:36:58,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:36:58,878 INFO L413 NwaCegarLoop]: 20190 mSDtfsCounter, 6 mSDsluCounter, 20180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40370 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:36:58,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40370 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:36:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12490 states. [2023-12-25 15:36:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12490 to 12489. [2023-12-25 15:36:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12488 states have (on average 1.663757206918642) internal successors, (20777), 12488 states have internal predecessors, (20777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 20777 transitions. [2023-12-25 15:36:58,998 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 20777 transitions. Word has length 502 [2023-12-25 15:36:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:36:58,998 INFO L495 AbstractCegarLoop]: Abstraction has 12489 states and 20777 transitions. [2023-12-25 15:36:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:36:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 20777 transitions. [2023-12-25 15:36:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-25 15:36:59,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:36:59,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:36:59,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 15:36:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:59,221 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:36:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:36:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash -24839705, now seen corresponding path program 1 times [2023-12-25 15:36:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:36:59,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242451908] [2023-12-25 15:36:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:59,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:36:59,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:36:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437581676] [2023-12-25 15:36:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:36:59,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:36:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:36:59,377 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:36:59,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 15:37:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:37:02,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 15:37:02,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:37:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:37:03,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:37:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:37:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242451908] [2023-12-25 15:37:03,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:37:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437581676] [2023-12-25 15:37:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437581676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:37:03,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:37:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:37:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666586474] [2023-12-25 15:37:03,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:37:03,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:37:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:37:03,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:37:03,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:37:03,769 INFO L87 Difference]: Start difference. First operand 12489 states and 20777 transitions. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:37:04,238 INFO L93 Difference]: Finished difference Result 24695 states and 41083 transitions. [2023-12-25 15:37:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:37:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 503 [2023-12-25 15:37:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:37:04,250 INFO L225 Difference]: With dead ends: 24695 [2023-12-25 15:37:04,250 INFO L226 Difference]: Without dead ends: 12489 [2023-12-25 15:37:04,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:37:04,262 INFO L413 NwaCegarLoop]: 19977 mSDtfsCounter, 19882 mSDsluCounter, 19976 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19882 SdHoareTripleChecker+Valid, 39953 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:37:04,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19882 Valid, 39953 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:37:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2023-12-25 15:37:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 12489. [2023-12-25 15:37:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12488 states have (on average 1.6635970531710442) internal successors, (20775), 12488 states have internal predecessors, (20775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 20775 transitions. [2023-12-25 15:37:04,394 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 20775 transitions. Word has length 503 [2023-12-25 15:37:04,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:37:04,394 INFO L495 AbstractCegarLoop]: Abstraction has 12489 states and 20775 transitions. [2023-12-25 15:37:04,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 20775 transitions. [2023-12-25 15:37:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-25 15:37:04,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:37:04,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:37:04,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 15:37:04,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-25 15:37:04,612 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:37:04,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:37:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1883589313, now seen corresponding path program 1 times [2023-12-25 15:37:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:37:04,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969029407] [2023-12-25 15:37:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:37:04,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:37:04,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568567160] [2023-12-25 15:37:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:04,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:37:04,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:37:04,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:37:04,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 15:37:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:37:08,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:37:08,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:37:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:37:08,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:37:08,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:37:08,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969029407] [2023-12-25 15:37:08,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:37:08,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568567160] [2023-12-25 15:37:08,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568567160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:37:08,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:37:08,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:37:08,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749129074] [2023-12-25 15:37:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:37:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:37:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:37:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:37:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:37:08,708 INFO L87 Difference]: Start difference. First operand 12489 states and 20775 transitions. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:37:09,336 INFO L93 Difference]: Finished difference Result 24695 states and 41079 transitions. [2023-12-25 15:37:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:37:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 504 [2023-12-25 15:37:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:37:09,348 INFO L225 Difference]: With dead ends: 24695 [2023-12-25 15:37:09,348 INFO L226 Difference]: Without dead ends: 12489 [2023-12-25 15:37:09,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:37:09,358 INFO L413 NwaCegarLoop]: 19977 mSDtfsCounter, 39814 mSDsluCounter, 39952 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39814 SdHoareTripleChecker+Valid, 59929 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:37:09,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39814 Valid, 59929 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:37:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2023-12-25 15:37:09,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 12489. [2023-12-25 15:37:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12488 states have (on average 1.6633568225496476) internal successors, (20772), 12488 states have internal predecessors, (20772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 20772 transitions. [2023-12-25 15:37:09,476 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 20772 transitions. Word has length 504 [2023-12-25 15:37:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:37:09,476 INFO L495 AbstractCegarLoop]: Abstraction has 12489 states and 20772 transitions. [2023-12-25 15:37:09,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 20772 transitions. [2023-12-25 15:37:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-25 15:37:09,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:37:09,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:37:09,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 15:37:09,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-25 15:37:09,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:37:09,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:37:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1606004817, now seen corresponding path program 1 times [2023-12-25 15:37:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:37:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135873177] [2023-12-25 15:37:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:37:09,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:37:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239427274] [2023-12-25 15:37:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:09,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:37:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:37:09,929 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:37:09,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 15:37:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:37:13,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 15:37:13,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:37:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:37:13,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:37:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:37:13,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135873177] [2023-12-25 15:37:13,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:37:13,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239427274] [2023-12-25 15:37:13,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239427274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:37:13,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:37:13,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:37:13,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087756115] [2023-12-25 15:37:13,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:37:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:37:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:37:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:37:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:37:13,915 INFO L87 Difference]: Start difference. First operand 12489 states and 20772 transitions. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:37:14,489 INFO L93 Difference]: Finished difference Result 24695 states and 41073 transitions. [2023-12-25 15:37:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:37:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 505 [2023-12-25 15:37:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:37:14,502 INFO L225 Difference]: With dead ends: 24695 [2023-12-25 15:37:14,502 INFO L226 Difference]: Without dead ends: 12489 [2023-12-25 15:37:14,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:37:14,512 INFO L413 NwaCegarLoop]: 19977 mSDtfsCounter, 39810 mSDsluCounter, 39952 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39810 SdHoareTripleChecker+Valid, 59929 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:37:14,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39810 Valid, 59929 Invalid, 630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:37:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2023-12-25 15:37:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 12489. [2023-12-25 15:37:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12488 states have (on average 1.6631165919282511) internal successors, (20769), 12488 states have internal predecessors, (20769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 20769 transitions. [2023-12-25 15:37:14,639 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 20769 transitions. Word has length 505 [2023-12-25 15:37:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:37:14,640 INFO L495 AbstractCegarLoop]: Abstraction has 12489 states and 20769 transitions. [2023-12-25 15:37:14,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 20769 transitions. [2023-12-25 15:37:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-25 15:37:14,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:37:14,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:37:14,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 15:37:14,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-25 15:37:14,853 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:37:14,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:37:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1002782641, now seen corresponding path program 1 times [2023-12-25 15:37:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:37:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870336383] [2023-12-25 15:37:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:37:15,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:37:15,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198485096] [2023-12-25 15:37:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:15,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:37:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:37:15,102 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:37:15,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 15:37:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:37:18,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-25 15:37:18,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:37:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:37:20,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:37:20,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:37:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870336383] [2023-12-25 15:37:20,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:37:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198485096] [2023-12-25 15:37:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198485096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:37:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:37:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:37:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609565417] [2023-12-25 15:37:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:37:20,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:37:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:37:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:37:20,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:37:20,528 INFO L87 Difference]: Start difference. First operand 12489 states and 20769 transitions. Second operand has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 12 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:37:52,044 INFO L93 Difference]: Finished difference Result 111151 states and 184777 transitions. [2023-12-25 15:37:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-25 15:37:52,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 12 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 505 [2023-12-25 15:37:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:37:52,146 INFO L225 Difference]: With dead ends: 111151 [2023-12-25 15:37:52,147 INFO L226 Difference]: Without dead ends: 98945 [2023-12-25 15:37:52,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=669, Invalid=2991, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 15:37:52,173 INFO L413 NwaCegarLoop]: 34402 mSDtfsCounter, 447795 mSDsluCounter, 259494 mSDsCounter, 0 mSdLazyCounter, 53379 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447795 SdHoareTripleChecker+Valid, 293896 SdHoareTripleChecker+Invalid, 53383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:37:52,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447795 Valid, 293896 Invalid, 53383 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 53379 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2023-12-25 15:37:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98945 states. [2023-12-25 15:37:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98945 to 12992. [2023-12-25 15:37:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12992 states, 12991 states have (on average 1.6612270033099839) internal successors, (21581), 12991 states have internal predecessors, (21581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12992 states to 12992 states and 21581 transitions. [2023-12-25 15:37:52,667 INFO L78 Accepts]: Start accepts. Automaton has 12992 states and 21581 transitions. Word has length 505 [2023-12-25 15:37:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:37:52,667 INFO L495 AbstractCegarLoop]: Abstraction has 12992 states and 21581 transitions. [2023-12-25 15:37:52,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 12 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:37:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 12992 states and 21581 transitions. [2023-12-25 15:37:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-25 15:37:52,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:37:52,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:37:52,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 15:37:52,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-25 15:37:52,892 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:37:52,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:37:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1517177293, now seen corresponding path program 1 times [2023-12-25 15:37:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:37:52,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375552474] [2023-12-25 15:37:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:52,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:37:53,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:37:53,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956741977] [2023-12-25 15:37:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:37:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:37:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:37:53,142 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:37:53,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 15:37:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:37:56,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-25 15:37:56,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:37:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:37:57,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:37:57,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:37:57,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375552474] [2023-12-25 15:37:57,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:37:57,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956741977] [2023-12-25 15:37:57,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956741977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:37:57,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:37:57,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-25 15:37:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161768876] [2023-12-25 15:37:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:37:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 15:37:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:37:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 15:37:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-12-25 15:37:57,240 INFO L87 Difference]: Start difference. First operand 12992 states and 21581 transitions. Second operand has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 17 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:38:09,965 INFO L93 Difference]: Finished difference Result 229214 states and 380693 transitions. [2023-12-25 15:38:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-25 15:38:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 17 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 505 [2023-12-25 15:38:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:38:10,351 INFO L225 Difference]: With dead ends: 229214 [2023-12-25 15:38:10,351 INFO L226 Difference]: Without dead ends: 216505 [2023-12-25 15:38:10,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3902 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1526, Invalid=9816, Unknown=0, NotChecked=0, Total=11342 [2023-12-25 15:38:10,379 INFO L413 NwaCegarLoop]: 20394 mSDtfsCounter, 1311117 mSDsluCounter, 301543 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311117 SdHoareTripleChecker+Valid, 321937 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 15:38:10,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311117 Valid, 321937 Invalid, 2835 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [23 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 15:38:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216505 states. [2023-12-25 15:38:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216505 to 13148. [2023-12-25 15:38:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13148 states, 13147 states have (on average 1.6604548566212824) internal successors, (21830), 13147 states have internal predecessors, (21830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13148 states to 13148 states and 21830 transitions. [2023-12-25 15:38:11,202 INFO L78 Accepts]: Start accepts. Automaton has 13148 states and 21830 transitions. Word has length 505 [2023-12-25 15:38:11,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:38:11,203 INFO L495 AbstractCegarLoop]: Abstraction has 13148 states and 21830 transitions. [2023-12-25 15:38:11,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 17 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 13148 states and 21830 transitions. [2023-12-25 15:38:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 15:38:11,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:38:11,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:38:11,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 15:38:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:11,414 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:38:11,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:38:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash -399730729, now seen corresponding path program 1 times [2023-12-25 15:38:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:38:11,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753980694] [2023-12-25 15:38:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:38:11,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:38:11,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680249004] [2023-12-25 15:38:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:11,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:11,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:38:11,688 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:38:11,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 15:38:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:38:14,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 15:38:14,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:38:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:38:15,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:38:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:38:15,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753980694] [2023-12-25 15:38:15,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:38:15,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680249004] [2023-12-25 15:38:15,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680249004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:38:15,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:38:15,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:38:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260878955] [2023-12-25 15:38:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:38:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:38:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:38:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:38:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:38:15,022 INFO L87 Difference]: Start difference. First operand 13148 states and 21830 transitions. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:38:15,580 INFO L93 Difference]: Finished difference Result 39334 states and 65289 transitions. [2023-12-25 15:38:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:38:15,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-12-25 15:38:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:38:15,602 INFO L225 Difference]: With dead ends: 39334 [2023-12-25 15:38:15,602 INFO L226 Difference]: Without dead ends: 26466 [2023-12-25 15:38:15,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:38:15,613 INFO L413 NwaCegarLoop]: 20543 mSDtfsCounter, 118220 mSDsluCounter, 41027 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118220 SdHoareTripleChecker+Valid, 61570 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:38:15,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118220 Valid, 61570 Invalid, 83 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:38:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26466 states. [2023-12-25 15:38:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26466 to 13239. [2023-12-25 15:38:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13239 states, 13238 states have (on average 1.6602961172382535) internal successors, (21979), 13238 states have internal predecessors, (21979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13239 states to 13239 states and 21979 transitions. [2023-12-25 15:38:15,807 INFO L78 Accepts]: Start accepts. Automaton has 13239 states and 21979 transitions. Word has length 506 [2023-12-25 15:38:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:38:15,807 INFO L495 AbstractCegarLoop]: Abstraction has 13239 states and 21979 transitions. [2023-12-25 15:38:15,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 13239 states and 21979 transitions. [2023-12-25 15:38:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 15:38:15,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:38:15,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:38:15,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-25 15:38:16,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:16,019 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:38:16,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:38:16,019 INFO L85 PathProgramCache]: Analyzing trace with hash -803832195, now seen corresponding path program 1 times [2023-12-25 15:38:16,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:38:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857182187] [2023-12-25 15:38:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:16,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:38:16,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:38:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99596992] [2023-12-25 15:38:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:16,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:16,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:38:16,233 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:38:16,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 15:38:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:38:19,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 15:38:19,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:38:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:38:19,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:38:19,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:38:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857182187] [2023-12-25 15:38:19,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:38:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99596992] [2023-12-25 15:38:19,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99596992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:38:19,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:38:19,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-25 15:38:19,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340166129] [2023-12-25 15:38:19,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:38:19,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 15:38:19,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:38:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 15:38:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-25 15:38:19,485 INFO L87 Difference]: Start difference. First operand 13239 states and 21979 transitions. Second operand has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:38:24,049 INFO L93 Difference]: Finished difference Result 117027 states and 194203 transitions. [2023-12-25 15:38:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-25 15:38:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-12-25 15:38:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:38:24,138 INFO L225 Difference]: With dead ends: 117027 [2023-12-25 15:38:24,138 INFO L226 Difference]: Without dead ends: 104063 [2023-12-25 15:38:24,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=452, Invalid=3208, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 15:38:24,155 INFO L413 NwaCegarLoop]: 20357 mSDtfsCounter, 275361 mSDsluCounter, 223729 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275361 SdHoareTripleChecker+Valid, 244086 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:38:24,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275361 Valid, 244086 Invalid, 2492 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [10 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 15:38:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104063 states. [2023-12-25 15:38:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104063 to 13273. [2023-12-25 15:38:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13273 states, 13272 states have (on average 1.6591320072332731) internal successors, (22020), 13272 states have internal predecessors, (22020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13273 states to 13273 states and 22020 transitions. [2023-12-25 15:38:24,705 INFO L78 Accepts]: Start accepts. Automaton has 13273 states and 22020 transitions. Word has length 506 [2023-12-25 15:38:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:38:24,705 INFO L495 AbstractCegarLoop]: Abstraction has 13273 states and 22020 transitions. [2023-12-25 15:38:24,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13273 states and 22020 transitions. [2023-12-25 15:38:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 15:38:24,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:38:24,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:38:24,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-25 15:38:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:24,925 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:38:24,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:38:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash -675857771, now seen corresponding path program 1 times [2023-12-25 15:38:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:38:24,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651932265] [2023-12-25 15:38:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:38:25,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:38:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034969563] [2023-12-25 15:38:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:25,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:25,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:38:25,114 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:38:25,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 15:38:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:38:28,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-25 15:38:28,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:38:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:38:29,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:38:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:38:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651932265] [2023-12-25 15:38:29,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:38:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034969563] [2023-12-25 15:38:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034969563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:38:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:38:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:38:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099340013] [2023-12-25 15:38:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:38:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:38:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:38:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:38:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:38:29,438 INFO L87 Difference]: Start difference. First operand 13273 states and 22020 transitions. Second operand has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 12 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:38:42,102 INFO L93 Difference]: Finished difference Result 50397 states and 83678 transitions. [2023-12-25 15:38:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 15:38:42,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 12 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-12-25 15:38:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:38:42,133 INFO L225 Difference]: With dead ends: 50397 [2023-12-25 15:38:42,133 INFO L226 Difference]: Without dead ends: 37407 [2023-12-25 15:38:42,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 15:38:42,148 INFO L413 NwaCegarLoop]: 18616 mSDtfsCounter, 156002 mSDsluCounter, 181093 mSDsCounter, 0 mSdLazyCounter, 25103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156002 SdHoareTripleChecker+Valid, 199709 SdHoareTripleChecker+Invalid, 25105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:38:42,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156002 Valid, 199709 Invalid, 25105 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 25103 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-25 15:38:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37407 states. [2023-12-25 15:38:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37407 to 13276. [2023-12-25 15:38:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13276 states, 13275 states have (on average 1.6589830508474577) internal successors, (22023), 13275 states have internal predecessors, (22023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13276 states to 13276 states and 22023 transitions. [2023-12-25 15:38:42,340 INFO L78 Accepts]: Start accepts. Automaton has 13276 states and 22023 transitions. Word has length 506 [2023-12-25 15:38:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:38:42,340 INFO L495 AbstractCegarLoop]: Abstraction has 13276 states and 22023 transitions. [2023-12-25 15:38:42,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 12 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 13276 states and 22023 transitions. [2023-12-25 15:38:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-25 15:38:42,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:38:42,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:38:42,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-25 15:38:42,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:42,562 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:38:42,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:38:42,562 INFO L85 PathProgramCache]: Analyzing trace with hash 931734715, now seen corresponding path program 1 times [2023-12-25 15:38:42,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:38:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673529350] [2023-12-25 15:38:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:38:42,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:38:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127061830] [2023-12-25 15:38:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:38:42,810 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:38:42,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 15:38:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:38:46,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-25 15:38:46,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:38:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:38:47,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:38:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:38:47,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673529350] [2023-12-25 15:38:47,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:38:47,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127061830] [2023-12-25 15:38:47,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127061830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:38:47,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:38:47,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 15:38:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048912714] [2023-12-25 15:38:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:38:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 15:38:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:38:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 15:38:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:38:47,063 INFO L87 Difference]: Start difference. First operand 13276 states and 22023 transitions. Second operand has 17 states, 17 states have (on average 29.764705882352942) internal successors, (506), 16 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:38:54,169 INFO L93 Difference]: Finished difference Result 52786 states and 87486 transitions. [2023-12-25 15:38:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 15:38:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 29.764705882352942) internal successors, (506), 16 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-12-25 15:38:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:38:54,198 INFO L225 Difference]: With dead ends: 52786 [2023-12-25 15:38:54,198 INFO L226 Difference]: Without dead ends: 39287 [2023-12-25 15:38:54,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2023-12-25 15:38:54,209 INFO L413 NwaCegarLoop]: 19580 mSDtfsCounter, 139212 mSDsluCounter, 272709 mSDsCounter, 0 mSdLazyCounter, 11517 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139212 SdHoareTripleChecker+Valid, 292289 SdHoareTripleChecker+Invalid, 11522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:38:54,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139212 Valid, 292289 Invalid, 11522 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [5 Valid, 11517 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-25 15:38:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39287 states. [2023-12-25 15:38:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39287 to 13291. [2023-12-25 15:38:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 13290 states have (on average 1.6583897667419112) internal successors, (22040), 13290 states have internal predecessors, (22040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 22040 transitions. [2023-12-25 15:38:54,405 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 22040 transitions. Word has length 506 [2023-12-25 15:38:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:38:54,406 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 22040 transitions. [2023-12-25 15:38:54,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 29.764705882352942) internal successors, (506), 16 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 22040 transitions. [2023-12-25 15:38:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:38:54,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:38:54,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:38:54,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-25 15:38:54,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:54,611 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:38:54,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:38:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1009081369, now seen corresponding path program 1 times [2023-12-25 15:38:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:38:54,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467134764] [2023-12-25 15:38:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:54,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:38:54,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:38:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284976993] [2023-12-25 15:38:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:54,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:38:54,798 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:38:54,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 15:38:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:38:57,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 15:38:58,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:38:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:38:58,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:38:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:38:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467134764] [2023-12-25 15:38:58,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:38:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284976993] [2023-12-25 15:38:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284976993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:38:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:38:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:38:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828549418] [2023-12-25 15:38:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:38:58,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:38:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:38:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:38:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:38:58,119 INFO L87 Difference]: Start difference. First operand 13291 states and 22040 transitions. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:38:59,191 INFO L93 Difference]: Finished difference Result 39461 states and 65424 transitions. [2023-12-25 15:38:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:38:59,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:38:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:38:59,226 INFO L225 Difference]: With dead ends: 39461 [2023-12-25 15:38:59,226 INFO L226 Difference]: Without dead ends: 26296 [2023-12-25 15:38:59,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:38:59,240 INFO L413 NwaCegarLoop]: 39772 mSDtfsCounter, 19907 mSDsluCounter, 139203 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19907 SdHoareTripleChecker+Valid, 178975 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:38:59,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19907 Valid, 178975 Invalid, 451 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 15:38:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26296 states. [2023-12-25 15:38:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26296 to 13295. [2023-12-25 15:38:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13295 states, 13294 states have (on average 1.6581916654129683) internal successors, (22044), 13294 states have internal predecessors, (22044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13295 states to 13295 states and 22044 transitions. [2023-12-25 15:38:59,415 INFO L78 Accepts]: Start accepts. Automaton has 13295 states and 22044 transitions. Word has length 507 [2023-12-25 15:38:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:38:59,415 INFO L495 AbstractCegarLoop]: Abstraction has 13295 states and 22044 transitions. [2023-12-25 15:38:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:38:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13295 states and 22044 transitions. [2023-12-25 15:38:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:38:59,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:38:59,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:38:59,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 15:38:59,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:59,639 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:38:59,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:38:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1972589133, now seen corresponding path program 1 times [2023-12-25 15:38:59,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:38:59,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072356201] [2023-12-25 15:38:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:59,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:38:59,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:38:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283729581] [2023-12-25 15:38:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:38:59,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:38:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:38:59,803 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:38:59,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 15:39:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:39:03,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 15:39:03,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:39:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:39:04,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:39:04,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:39:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072356201] [2023-12-25 15:39:04,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:39:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283729581] [2023-12-25 15:39:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283729581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:39:04,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:39:04,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:39:04,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154822722] [2023-12-25 15:39:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:39:04,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:39:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:39:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:39:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:39:04,832 INFO L87 Difference]: Start difference. First operand 13295 states and 22044 transitions. Second operand has 11 states, 11 states have (on average 46.09090909090909) internal successors, (507), 10 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:39:15,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:19,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:23,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:27,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:35,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:36,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:39:37,174 INFO L93 Difference]: Finished difference Result 65340 states and 108313 transitions. [2023-12-25 15:39:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 15:39:37,174 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 46.09090909090909) internal successors, (507), 10 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:39:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:39:37,225 INFO L225 Difference]: With dead ends: 65340 [2023-12-25 15:39:37,225 INFO L226 Difference]: Without dead ends: 52328 [2023-12-25 15:39:37,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-25 15:39:37,244 INFO L413 NwaCegarLoop]: 39086 mSDtfsCounter, 157268 mSDsluCounter, 196944 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157268 SdHoareTripleChecker+Valid, 236030 SdHoareTripleChecker+Invalid, 7178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7173 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:39:37,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157268 Valid, 236030 Invalid, 7178 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [0 Valid, 7173 Invalid, 5 Unknown, 0 Unchecked, 30.7s Time] [2023-12-25 15:39:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52328 states. [2023-12-25 15:39:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52328 to 13753. [2023-12-25 15:39:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13753 states, 13752 states have (on average 1.6535776614310647) internal successors, (22740), 13752 states have internal predecessors, (22740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:39:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13753 states to 13753 states and 22740 transitions. [2023-12-25 15:39:37,653 INFO L78 Accepts]: Start accepts. Automaton has 13753 states and 22740 transitions. Word has length 507 [2023-12-25 15:39:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:39:37,653 INFO L495 AbstractCegarLoop]: Abstraction has 13753 states and 22740 transitions. [2023-12-25 15:39:37,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.09090909090909) internal successors, (507), 10 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:39:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13753 states and 22740 transitions. [2023-12-25 15:39:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:39:37,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:39:37,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:39:37,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-25 15:39:37,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-25 15:39:37,872 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:39:37,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:39:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 697540467, now seen corresponding path program 1 times [2023-12-25 15:39:37,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:39:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355849757] [2023-12-25 15:39:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:39:37,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:39:38,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:39:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891240892] [2023-12-25 15:39:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:39:38,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:39:38,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:39:38,058 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:39:38,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 15:39:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:39:41,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 15:39:41,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:39:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:39:42,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:39:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:39:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355849757] [2023-12-25 15:39:42,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:39:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891240892] [2023-12-25 15:39:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891240892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:39:42,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:39:42,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:39:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184866280] [2023-12-25 15:39:42,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:39:42,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:39:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:39:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:39:42,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:39:42,720 INFO L87 Difference]: Start difference. First operand 13753 states and 22740 transitions. Second operand has 10 states, 10 states have (on average 50.7) internal successors, (507), 9 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:39:53,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:39:57,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:40:01,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:40:05,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:40:09,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:40:16,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:40:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:40:16,969 INFO L93 Difference]: Finished difference Result 65427 states and 108396 transitions. [2023-12-25 15:40:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 15:40:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 50.7) internal successors, (507), 9 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:40:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:40:17,016 INFO L225 Difference]: With dead ends: 65427 [2023-12-25 15:40:17,016 INFO L226 Difference]: Without dead ends: 52385 [2023-12-25 15:40:17,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:40:17,031 INFO L413 NwaCegarLoop]: 58025 mSDtfsCounter, 118021 mSDsluCounter, 249144 mSDsCounter, 0 mSdLazyCounter, 8330 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118021 SdHoareTripleChecker+Valid, 307169 SdHoareTripleChecker+Invalid, 8337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8330 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:40:17,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118021 Valid, 307169 Invalid, 8337 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 8330 Invalid, 6 Unknown, 0 Unchecked, 32.9s Time] [2023-12-25 15:40:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52385 states. [2023-12-25 15:40:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52385 to 14390. [2023-12-25 15:40:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14390 states, 14389 states have (on average 1.6473695183820973) internal successors, (23704), 14389 states have internal predecessors, (23704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14390 states to 14390 states and 23704 transitions. [2023-12-25 15:40:17,322 INFO L78 Accepts]: Start accepts. Automaton has 14390 states and 23704 transitions. Word has length 507 [2023-12-25 15:40:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:40:17,322 INFO L495 AbstractCegarLoop]: Abstraction has 14390 states and 23704 transitions. [2023-12-25 15:40:17,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.7) internal successors, (507), 9 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14390 states and 23704 transitions. [2023-12-25 15:40:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:40:17,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:40:17,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:40:17,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-25 15:40:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 15:40:17,542 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:40:17,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:40:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1533570485, now seen corresponding path program 1 times [2023-12-25 15:40:17,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:40:17,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722838004] [2023-12-25 15:40:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:40:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:40:17,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:40:17,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991440286] [2023-12-25 15:40:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:40:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:40:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:40:17,714 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:40:17,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 15:40:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:40:21,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-25 15:40:21,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:40:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:40:22,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:40:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:40:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722838004] [2023-12-25 15:40:22,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:40:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991440286] [2023-12-25 15:40:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991440286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:40:22,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:40:22,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-25 15:40:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271092377] [2023-12-25 15:40:22,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:40:22,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 15:40:22,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:40:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 15:40:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:40:22,533 INFO L87 Difference]: Start difference. First operand 14390 states and 23704 transitions. Second operand has 17 states, 17 states have (on average 29.823529411764707) internal successors, (507), 17 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:40:42,575 INFO L93 Difference]: Finished difference Result 107467 states and 177907 transitions. [2023-12-25 15:40:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-25 15:40:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 29.823529411764707) internal successors, (507), 17 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:40:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:40:42,646 INFO L225 Difference]: With dead ends: 107467 [2023-12-25 15:40:42,646 INFO L226 Difference]: Without dead ends: 94449 [2023-12-25 15:40:42,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=493, Invalid=1763, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 15:40:42,663 INFO L413 NwaCegarLoop]: 58201 mSDtfsCounter, 295989 mSDsluCounter, 542330 mSDsCounter, 0 mSdLazyCounter, 20985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295989 SdHoareTripleChecker+Valid, 600531 SdHoareTripleChecker+Invalid, 20986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:40:42,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295989 Valid, 600531 Invalid, 20986 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [1 Valid, 20985 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-12-25 15:40:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94449 states. [2023-12-25 15:40:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94449 to 14744. [2023-12-25 15:40:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14744 states, 14743 states have (on average 1.6457980058332768) internal successors, (24264), 14743 states have internal predecessors, (24264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14744 states to 14744 states and 24264 transitions. [2023-12-25 15:40:43,130 INFO L78 Accepts]: Start accepts. Automaton has 14744 states and 24264 transitions. Word has length 507 [2023-12-25 15:40:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:40:43,130 INFO L495 AbstractCegarLoop]: Abstraction has 14744 states and 24264 transitions. [2023-12-25 15:40:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 29.823529411764707) internal successors, (507), 17 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14744 states and 24264 transitions. [2023-12-25 15:40:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:40:43,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:40:43,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:40:43,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 15:40:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-25 15:40:43,355 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:40:43,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:40:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash 251292313, now seen corresponding path program 1 times [2023-12-25 15:40:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:40:43,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094882707] [2023-12-25 15:40:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:40:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:40:43,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:40:43,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041301064] [2023-12-25 15:40:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:40:43,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:40:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:40:43,536 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:40:43,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 15:40:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:40:46,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 15:40:46,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:40:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:40:47,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:40:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:40:47,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094882707] [2023-12-25 15:40:47,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:40:47,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041301064] [2023-12-25 15:40:47,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041301064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:40:47,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:40:47,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 15:40:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773194071] [2023-12-25 15:40:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:40:47,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 15:40:47,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:40:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 15:40:47,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:40:47,781 INFO L87 Difference]: Start difference. First operand 14744 states and 24264 transitions. Second operand has 12 states, 12 states have (on average 42.25) internal successors, (507), 11 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:40:59,710 INFO L93 Difference]: Finished difference Result 39853 states and 65896 transitions. [2023-12-25 15:40:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 15:40:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 42.25) internal successors, (507), 11 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:40:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:40:59,734 INFO L225 Difference]: With dead ends: 39853 [2023-12-25 15:40:59,734 INFO L226 Difference]: Without dead ends: 26436 [2023-12-25 15:40:59,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-12-25 15:40:59,745 INFO L413 NwaCegarLoop]: 18348 mSDtfsCounter, 78478 mSDsluCounter, 161226 mSDsCounter, 0 mSdLazyCounter, 23732 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78478 SdHoareTripleChecker+Valid, 179574 SdHoareTripleChecker+Invalid, 23735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:40:59,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78478 Valid, 179574 Invalid, 23735 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3 Valid, 23732 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-25 15:40:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2023-12-25 15:40:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 14421. [2023-12-25 15:40:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14421 states, 14420 states have (on average 1.6463245492371705) internal successors, (23740), 14420 states have internal predecessors, (23740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 23740 transitions. [2023-12-25 15:40:59,941 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 23740 transitions. Word has length 507 [2023-12-25 15:40:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:40:59,941 INFO L495 AbstractCegarLoop]: Abstraction has 14421 states and 23740 transitions. [2023-12-25 15:40:59,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 42.25) internal successors, (507), 11 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:40:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 23740 transitions. [2023-12-25 15:40:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:40:59,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:40:59,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:40:59,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-25 15:41:00,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-25 15:41:00,160 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:41:00,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:41:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1666315441, now seen corresponding path program 1 times [2023-12-25 15:41:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:41:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297370081] [2023-12-25 15:41:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:41:00,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:41:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974787271] [2023-12-25 15:41:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:00,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:41:00,307 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:41:00,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 15:41:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:41:03,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 15:41:03,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:41:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:41:04,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:41:04,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:41:04,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297370081] [2023-12-25 15:41:04,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:41:04,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974787271] [2023-12-25 15:41:04,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974787271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:41:04,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:41:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:41:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64841672] [2023-12-25 15:41:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:41:04,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:41:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:41:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:41:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:41:04,077 INFO L87 Difference]: Start difference. First operand 14421 states and 23740 transitions. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:41:04,266 INFO L93 Difference]: Finished difference Result 27790 states and 45775 transitions. [2023-12-25 15:41:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:41:04,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:41:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:41:04,281 INFO L225 Difference]: With dead ends: 27790 [2023-12-25 15:41:04,281 INFO L226 Difference]: Without dead ends: 14441 [2023-12-25 15:41:04,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:41:04,293 INFO L413 NwaCegarLoop]: 20182 mSDtfsCounter, 19837 mSDsluCounter, 20175 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19837 SdHoareTripleChecker+Valid, 40357 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 [2023-12-25 15:41:04,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19837 Valid, 40357 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:41:04,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14441 states. [2023-12-25 15:41:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14441 to 14425. [2023-12-25 15:41:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14425 states, 14424 states have (on average 1.6461453133666113) internal successors, (23744), 14424 states have internal predecessors, (23744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14425 states to 14425 states and 23744 transitions. [2023-12-25 15:41:04,443 INFO L78 Accepts]: Start accepts. Automaton has 14425 states and 23744 transitions. Word has length 507 [2023-12-25 15:41:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:41:04,443 INFO L495 AbstractCegarLoop]: Abstraction has 14425 states and 23744 transitions. [2023-12-25 15:41:04,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 14425 states and 23744 transitions. [2023-12-25 15:41:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-25 15:41:04,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:41:04,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:41:04,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-25 15:41:04,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 15:41:04,660 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:41:04,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:41:04,661 INFO L85 PathProgramCache]: Analyzing trace with hash -893545371, now seen corresponding path program 1 times [2023-12-25 15:41:04,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:41:04,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091968516] [2023-12-25 15:41:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:41:04,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:41:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919073145] [2023-12-25 15:41:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:04,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:04,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:41:04,818 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:41:04,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 15:41:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:41:08,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 15:41:08,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:41:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:41:08,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:41:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:41:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091968516] [2023-12-25 15:41:08,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:41:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919073145] [2023-12-25 15:41:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919073145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:41:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:41:08,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:41:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927067426] [2023-12-25 15:41:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:41:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:41:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:41:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:41:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:41:08,092 INFO L87 Difference]: Start difference. First operand 14425 states and 23744 transitions. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:41:08,257 INFO L93 Difference]: Finished difference Result 27780 states and 45758 transitions. [2023-12-25 15:41:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:41:08,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 507 [2023-12-25 15:41:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:41:08,270 INFO L225 Difference]: With dead ends: 27780 [2023-12-25 15:41:08,270 INFO L226 Difference]: Without dead ends: 14433 [2023-12-25 15:41:08,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:41:08,281 INFO L413 NwaCegarLoop]: 20183 mSDtfsCounter, 10 mSDsluCounter, 20172 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40355 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:41:08,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40355 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:41:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14433 states. [2023-12-25 15:41:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14433 to 14425. [2023-12-25 15:41:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14425 states, 14424 states have (on average 1.6458679977814754) internal successors, (23740), 14424 states have internal predecessors, (23740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14425 states to 14425 states and 23740 transitions. [2023-12-25 15:41:08,418 INFO L78 Accepts]: Start accepts. Automaton has 14425 states and 23740 transitions. Word has length 507 [2023-12-25 15:41:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:41:08,418 INFO L495 AbstractCegarLoop]: Abstraction has 14425 states and 23740 transitions. [2023-12-25 15:41:08,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14425 states and 23740 transitions. [2023-12-25 15:41:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-25 15:41:08,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:41:08,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:41:08,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 15:41:08,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:08,647 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:41:08,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:41:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1221396613, now seen corresponding path program 1 times [2023-12-25 15:41:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:41:08,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256378446] [2023-12-25 15:41:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:41:08,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:41:08,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229863246] [2023-12-25 15:41:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:41:08,960 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:41:08,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 15:41:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:41:12,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-25 15:41:12,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:41:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:41:13,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:41:13,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:41:13,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256378446] [2023-12-25 15:41:13,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:41:13,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229863246] [2023-12-25 15:41:13,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229863246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:41:13,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:41:13,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:41:13,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103047556] [2023-12-25 15:41:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:41:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:41:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:41:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:41:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:41:13,725 INFO L87 Difference]: Start difference. First operand 14425 states and 23740 transitions. Second operand has 13 states, 13 states have (on average 39.07692307692308) internal successors, (508), 12 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:41:24,862 INFO L93 Difference]: Finished difference Result 91336 states and 151123 transitions. [2023-12-25 15:41:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 15:41:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 39.07692307692308) internal successors, (508), 12 states have internal predecessors, (508), 0 states have call successors, (0), 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 508 [2023-12-25 15:41:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:41:24,922 INFO L225 Difference]: With dead ends: 91336 [2023-12-25 15:41:24,922 INFO L226 Difference]: Without dead ends: 78292 [2023-12-25 15:41:24,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 15:41:24,934 INFO L413 NwaCegarLoop]: 38614 mSDtfsCounter, 312815 mSDsluCounter, 289976 mSDsCounter, 0 mSdLazyCounter, 15108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312815 SdHoareTripleChecker+Valid, 328590 SdHoareTripleChecker+Invalid, 15110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:41:24,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312815 Valid, 328590 Invalid, 15110 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [2 Valid, 15108 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-25 15:41:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78292 states. [2023-12-25 15:41:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78292 to 14442. [2023-12-25 15:41:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14442 states, 14441 states have (on average 1.6448999376774462) internal successors, (23754), 14441 states have internal predecessors, (23754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14442 states to 14442 states and 23754 transitions. [2023-12-25 15:41:25,342 INFO L78 Accepts]: Start accepts. Automaton has 14442 states and 23754 transitions. Word has length 508 [2023-12-25 15:41:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:41:25,342 INFO L495 AbstractCegarLoop]: Abstraction has 14442 states and 23754 transitions. [2023-12-25 15:41:25,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 39.07692307692308) internal successors, (508), 12 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 14442 states and 23754 transitions. [2023-12-25 15:41:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:41:25,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:41:25,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:41:25,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-25 15:41:25,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:25,561 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:41:25,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:41:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1039430409, now seen corresponding path program 1 times [2023-12-25 15:41:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:41:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967491656] [2023-12-25 15:41:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:41:25,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:41:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806351476] [2023-12-25 15:41:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:25,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:41:25,709 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:41:25,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-25 15:41:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:41:28,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 91 conjunts are in the unsatisfiable core [2023-12-25 15:41:28,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:41:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:41:29,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:41:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:41:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967491656] [2023-12-25 15:41:29,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:41:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806351476] [2023-12-25 15:41:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806351476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:41:29,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:41:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:41:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682327267] [2023-12-25 15:41:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:41:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:41:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:41:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:41:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:41:29,958 INFO L87 Difference]: Start difference. First operand 14442 states and 23754 transitions. Second operand has 8 states, 8 states have (on average 63.625) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:41:34,401 INFO L93 Difference]: Finished difference Result 40952 states and 67574 transitions. [2023-12-25 15:41:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 15:41:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 63.625) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:41:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:41:34,428 INFO L225 Difference]: With dead ends: 40952 [2023-12-25 15:41:34,428 INFO L226 Difference]: Without dead ends: 27541 [2023-12-25 15:41:34,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:41:34,441 INFO L413 NwaCegarLoop]: 38195 mSDtfsCounter, 79093 mSDsluCounter, 134308 mSDsCounter, 0 mSdLazyCounter, 7754 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79093 SdHoareTripleChecker+Valid, 172503 SdHoareTripleChecker+Invalid, 7754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:41:34,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79093 Valid, 172503 Invalid, 7754 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [0 Valid, 7754 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 15:41:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27541 states. [2023-12-25 15:41:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27541 to 14448. [2023-12-25 15:41:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14448 states, 14447 states have (on average 1.644701322073787) internal successors, (23761), 14447 states have internal predecessors, (23761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14448 states to 14448 states and 23761 transitions. [2023-12-25 15:41:34,748 INFO L78 Accepts]: Start accepts. Automaton has 14448 states and 23761 transitions. Word has length 509 [2023-12-25 15:41:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:41:34,749 INFO L495 AbstractCegarLoop]: Abstraction has 14448 states and 23761 transitions. [2023-12-25 15:41:34,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.625) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 14448 states and 23761 transitions. [2023-12-25 15:41:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:41:34,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:41:34,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:41:34,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-25 15:41:34,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:34,969 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:41:34,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:41:34,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1520327433, now seen corresponding path program 1 times [2023-12-25 15:41:34,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:41:34,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836761177] [2023-12-25 15:41:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:41:35,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:41:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904445886] [2023-12-25 15:41:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:35,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:35,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:41:35,123 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:41:35,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-25 15:41:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:41:38,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-25 15:41:38,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:41:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:41:40,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:41:40,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:41:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836761177] [2023-12-25 15:41:40,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:41:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904445886] [2023-12-25 15:41:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904445886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:41:40,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:41:40,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:41:40,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047923701] [2023-12-25 15:41:40,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:41:40,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:41:40,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:41:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:41:40,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:41:40,109 INFO L87 Difference]: Start difference. First operand 14448 states and 23761 transitions. Second operand has 10 states, 10 states have (on average 50.9) internal successors, (509), 9 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:41:48,188 INFO L93 Difference]: Finished difference Result 67844 states and 112044 transitions. [2023-12-25 15:41:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 15:41:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 50.9) internal successors, (509), 9 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:41:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:41:48,234 INFO L225 Difference]: With dead ends: 67844 [2023-12-25 15:41:48,234 INFO L226 Difference]: Without dead ends: 54777 [2023-12-25 15:41:48,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-12-25 15:41:48,251 INFO L413 NwaCegarLoop]: 38864 mSDtfsCounter, 138397 mSDsluCounter, 176498 mSDsCounter, 0 mSdLazyCounter, 9975 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138397 SdHoareTripleChecker+Valid, 215362 SdHoareTripleChecker+Invalid, 9977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:41:48,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138397 Valid, 215362 Invalid, 9977 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 9975 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-25 15:41:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54777 states. [2023-12-25 15:41:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54777 to 14448. [2023-12-25 15:41:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14448 states, 14447 states have (on average 1.644701322073787) internal successors, (23761), 14447 states have internal predecessors, (23761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14448 states to 14448 states and 23761 transitions. [2023-12-25 15:41:48,640 INFO L78 Accepts]: Start accepts. Automaton has 14448 states and 23761 transitions. Word has length 509 [2023-12-25 15:41:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:41:48,641 INFO L495 AbstractCegarLoop]: Abstraction has 14448 states and 23761 transitions. [2023-12-25 15:41:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.9) internal successors, (509), 9 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:41:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 14448 states and 23761 transitions. [2023-12-25 15:41:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:41:48,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:41:48,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:41:48,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-25 15:41:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-25 15:41:48,865 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:41:48,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:41:48,865 INFO L85 PathProgramCache]: Analyzing trace with hash -999632501, now seen corresponding path program 1 times [2023-12-25 15:41:48,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:41:48,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937435552] [2023-12-25 15:41:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:48,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:41:49,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:41:49,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098053914] [2023-12-25 15:41:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:41:49,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:41:49,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:41:49,023 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:41:49,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-25 15:41:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:41:52,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-25 15:41:52,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:41:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:41:54,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:41:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:41:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937435552] [2023-12-25 15:41:54,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:41:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098053914] [2023-12-25 15:41:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098053914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:41:54,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:41:54,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-25 15:41:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405774357] [2023-12-25 15:41:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:41:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 15:41:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:41:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 15:41:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-25 15:41:54,035 INFO L87 Difference]: Start difference. First operand 14448 states and 23761 transitions. Second operand has 16 states, 16 states have (on average 31.8125) internal successors, (509), 15 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:42:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:42:20,719 INFO L93 Difference]: Finished difference Result 169178 states and 279754 transitions. [2023-12-25 15:42:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-25 15:42:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 31.8125) internal successors, (509), 15 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:42:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:42:20,893 INFO L225 Difference]: With dead ends: 169178 [2023-12-25 15:42:20,894 INFO L226 Difference]: Without dead ends: 156111 [2023-12-25 15:42:20,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5337 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2060, Invalid=11982, Unknown=0, NotChecked=0, Total=14042 [2023-12-25 15:42:20,927 INFO L413 NwaCegarLoop]: 37242 mSDtfsCounter, 570635 mSDsluCounter, 372033 mSDsCounter, 0 mSdLazyCounter, 35056 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570635 SdHoareTripleChecker+Valid, 409275 SdHoareTripleChecker+Invalid, 35060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:42:20,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570635 Valid, 409275 Invalid, 35060 Unknown, 0 Unchecked, 1.1s Time], IncrementalHoareTripleChecker [4 Valid, 35056 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-25 15:42:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156111 states. [2023-12-25 15:42:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156111 to 14448. [2023-12-25 15:42:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14448 states, 14447 states have (on average 1.644701322073787) internal successors, (23761), 14447 states have internal predecessors, (23761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:42:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14448 states to 14448 states and 23761 transitions. [2023-12-25 15:42:21,671 INFO L78 Accepts]: Start accepts. Automaton has 14448 states and 23761 transitions. Word has length 509 [2023-12-25 15:42:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:42:21,671 INFO L495 AbstractCegarLoop]: Abstraction has 14448 states and 23761 transitions. [2023-12-25 15:42:21,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 31.8125) internal successors, (509), 15 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:42:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 14448 states and 23761 transitions. [2023-12-25 15:42:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:42:21,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:42:21,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:42:21,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-25 15:42:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:42:21,882 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:42:21,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:42:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -137798899, now seen corresponding path program 1 times [2023-12-25 15:42:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:42:21,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060936321] [2023-12-25 15:42:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:42:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:42:22,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:42:22,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940828577] [2023-12-25 15:42:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:42:22,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:42:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:42:22,104 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:42:22,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-25 15:42:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:42:25,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-25 15:42:25,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:42:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:42:26,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:42:26,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:42:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060936321] [2023-12-25 15:42:26,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:42:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940828577] [2023-12-25 15:42:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940828577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:42:26,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:42:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 15:42:26,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745018847] [2023-12-25 15:42:26,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:42:26,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 15:42:26,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:42:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 15:42:26,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:42:26,507 INFO L87 Difference]: Start difference. First operand 14448 states and 23761 transitions. Second operand has 12 states, 12 states have (on average 42.416666666666664) internal successors, (509), 11 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:42:38,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:42:41,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:42:45,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:42:49,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:42:53,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:42:54,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:42:58,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:43:01,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:43:08,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 15:43:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:43:08,537 INFO L93 Difference]: Finished difference Result 78256 states and 129463 transitions. [2023-12-25 15:43:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 15:43:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 42.416666666666664) internal successors, (509), 11 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:43:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:43:08,582 INFO L225 Difference]: With dead ends: 78256 [2023-12-25 15:43:08,582 INFO L226 Difference]: Without dead ends: 65159 [2023-12-25 15:43:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2023-12-25 15:43:08,589 INFO L413 NwaCegarLoop]: 38652 mSDtfsCounter, 175928 mSDsluCounter, 230242 mSDsCounter, 0 mSdLazyCounter, 8847 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175928 SdHoareTripleChecker+Valid, 268894 SdHoareTripleChecker+Invalid, 8854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8847 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:43:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175928 Valid, 268894 Invalid, 8854 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1 Valid, 8847 Invalid, 6 Unknown, 0 Unchecked, 40.0s Time] [2023-12-25 15:43:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65159 states. [2023-12-25 15:43:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65159 to 15104. [2023-12-25 15:43:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15104 states, 15103 states have (on average 1.6381513606568232) internal successors, (24741), 15103 states have internal predecessors, (24741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 24741 transitions. [2023-12-25 15:43:08,849 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 24741 transitions. Word has length 509 [2023-12-25 15:43:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:43:08,849 INFO L495 AbstractCegarLoop]: Abstraction has 15104 states and 24741 transitions. [2023-12-25 15:43:08,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 42.416666666666664) internal successors, (509), 11 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 24741 transitions. [2023-12-25 15:43:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:43:08,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:43:08,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:43:08,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-25 15:43:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-25 15:43:09,060 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:43:09,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:43:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1271622965, now seen corresponding path program 1 times [2023-12-25 15:43:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:43:09,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332475243] [2023-12-25 15:43:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:43:09,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:43:09,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:43:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100477001] [2023-12-25 15:43:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:43:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:43:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:43:09,224 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:43:09,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-25 15:43:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:43:12,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-25 15:43:12,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:43:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:43:13,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:43:13,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:43:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332475243] [2023-12-25 15:43:13,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:43:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100477001] [2023-12-25 15:43:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100477001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:43:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:43:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-25 15:43:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992770104] [2023-12-25 15:43:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:43:13,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 15:43:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:43:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 15:43:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-25 15:43:13,495 INFO L87 Difference]: Start difference. First operand 15104 states and 24741 transitions. Second operand has 15 states, 15 states have (on average 33.93333333333333) internal successors, (509), 14 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:43:34,422 INFO L93 Difference]: Finished difference Result 77302 states and 127688 transitions. [2023-12-25 15:43:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-25 15:43:34,423 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 33.93333333333333) internal successors, (509), 14 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:43:34,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:43:34,474 INFO L225 Difference]: With dead ends: 77302 [2023-12-25 15:43:34,474 INFO L226 Difference]: Without dead ends: 64235 [2023-12-25 15:43:34,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=2299, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 15:43:34,491 INFO L413 NwaCegarLoop]: 37075 mSDtfsCounter, 174135 mSDsluCounter, 405596 mSDsCounter, 0 mSdLazyCounter, 39128 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174135 SdHoareTripleChecker+Valid, 442671 SdHoareTripleChecker+Invalid, 39641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 39128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:43:34,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174135 Valid, 442671 Invalid, 39641 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [513 Valid, 39128 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-25 15:43:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64235 states. [2023-12-25 15:43:34,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64235 to 38727. [2023-12-25 15:43:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38727 states, 38726 states have (on average 1.6478593193203532) internal successors, (63815), 38726 states have internal predecessors, (63815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38727 states to 38727 states and 63815 transitions. [2023-12-25 15:43:35,044 INFO L78 Accepts]: Start accepts. Automaton has 38727 states and 63815 transitions. Word has length 509 [2023-12-25 15:43:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:43:35,044 INFO L495 AbstractCegarLoop]: Abstraction has 38727 states and 63815 transitions. [2023-12-25 15:43:35,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 33.93333333333333) internal successors, (509), 14 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 38727 states and 63815 transitions. [2023-12-25 15:43:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:43:35,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:43:35,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:43:35,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-25 15:43:35,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:43:35,268 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:43:35,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:43:35,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1702108023, now seen corresponding path program 1 times [2023-12-25 15:43:35,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:43:35,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853990389] [2023-12-25 15:43:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:43:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:43:35,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:43:35,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985029467] [2023-12-25 15:43:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:43:35,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:43:35,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:43:35,430 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:43:35,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-25 15:43:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:43:38,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 15:43:38,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:43:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:43:38,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:43:38,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:43:38,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853990389] [2023-12-25 15:43:38,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:43:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985029467] [2023-12-25 15:43:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985029467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:43:38,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:43:38,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:43:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981018558] [2023-12-25 15:43:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:43:38,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:43:38,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:43:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:43:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:43:38,929 INFO L87 Difference]: Start difference. First operand 38727 states and 63815 transitions. Second operand has 8 states, 8 states have (on average 63.625) internal successors, (509), 8 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:43:42,854 INFO L93 Difference]: Finished difference Result 112179 states and 185182 transitions. [2023-12-25 15:43:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 15:43:42,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 63.625) internal successors, (509), 8 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:43:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:43:42,909 INFO L225 Difference]: With dead ends: 112179 [2023-12-25 15:43:42,909 INFO L226 Difference]: Without dead ends: 75269 [2023-12-25 15:43:42,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:43:42,927 INFO L413 NwaCegarLoop]: 20166 mSDtfsCounter, 19738 mSDsluCounter, 119820 mSDsCounter, 0 mSdLazyCounter, 5746 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19738 SdHoareTripleChecker+Valid, 139986 SdHoareTripleChecker+Invalid, 5749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:43:42,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19738 Valid, 139986 Invalid, 5749 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 5746 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 15:43:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75269 states. [2023-12-25 15:43:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75269 to 38766. [2023-12-25 15:43:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38766 states, 38765 states have (on average 1.6473623113633433) internal successors, (63860), 38765 states have internal predecessors, (63860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38766 states to 38766 states and 63860 transitions. [2023-12-25 15:43:43,572 INFO L78 Accepts]: Start accepts. Automaton has 38766 states and 63860 transitions. Word has length 509 [2023-12-25 15:43:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:43:43,572 INFO L495 AbstractCegarLoop]: Abstraction has 38766 states and 63860 transitions. [2023-12-25 15:43:43,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.625) internal successors, (509), 8 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:43:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 38766 states and 63860 transitions. [2023-12-25 15:43:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:43:43,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:43:43,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:43:43,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-25 15:43:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-25 15:43:43,786 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:43:43,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:43:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2047986699, now seen corresponding path program 1 times [2023-12-25 15:43:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:43:43,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947276706] [2023-12-25 15:43:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:43:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:43:43,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:43:43,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676925385] [2023-12-25 15:43:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:43:43,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:43:43,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:43:43,963 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:43:43,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-25 15:43:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:43:47,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-25 15:43:47,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:43:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:43:48,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:43:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:43:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947276706] [2023-12-25 15:43:48,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:43:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676925385] [2023-12-25 15:43:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676925385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:43:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:43:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 15:43:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444228951] [2023-12-25 15:43:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:43:48,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 15:43:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:43:48,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 15:43:48,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:43:48,826 INFO L87 Difference]: Start difference. First operand 38766 states and 63860 transitions. Second operand has 17 states, 17 states have (on average 29.941176470588236) internal successors, (509), 16 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:44:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:44:29,019 INFO L93 Difference]: Finished difference Result 137332 states and 226890 transitions. [2023-12-25 15:44:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-25 15:44:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 29.941176470588236) internal successors, (509), 16 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:44:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:44:29,116 INFO L225 Difference]: With dead ends: 137332 [2023-12-25 15:44:29,116 INFO L226 Difference]: Without dead ends: 99943 [2023-12-25 15:44:29,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=772, Invalid=4198, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 15:44:29,234 INFO L413 NwaCegarLoop]: 34212 mSDtfsCounter, 236041 mSDsluCounter, 393165 mSDsCounter, 0 mSdLazyCounter, 76903 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236041 SdHoareTripleChecker+Valid, 427377 SdHoareTripleChecker+Invalid, 76908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:44:29,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236041 Valid, 427377 Invalid, 76908 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [5 Valid, 76903 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time] [2023-12-25 15:44:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99943 states. [2023-12-25 15:44:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99943 to 38769. [2023-12-25 15:44:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38769 states, 38768 states have (on average 1.6473380107304993) internal successors, (63864), 38768 states have internal predecessors, (63864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:44:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38769 states to 38769 states and 63864 transitions. [2023-12-25 15:44:29,875 INFO L78 Accepts]: Start accepts. Automaton has 38769 states and 63864 transitions. Word has length 509 [2023-12-25 15:44:29,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:44:29,875 INFO L495 AbstractCegarLoop]: Abstraction has 38769 states and 63864 transitions. [2023-12-25 15:44:29,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 29.941176470588236) internal successors, (509), 16 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:44:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 38769 states and 63864 transitions. [2023-12-25 15:44:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:44:29,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:44:29,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:44:29,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-25 15:44:30,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 15:44:30,082 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:44:30,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:44:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash 975418823, now seen corresponding path program 1 times [2023-12-25 15:44:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:44:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392892236] [2023-12-25 15:44:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:44:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:44:30,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:44:30,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319887955] [2023-12-25 15:44:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:44:30,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:44:30,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:44:30,251 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:44:30,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-25 15:44:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:44:33,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-25 15:44:33,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:44:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:44:34,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:44:34,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:44:34,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392892236] [2023-12-25 15:44:34,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:44:34,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319887955] [2023-12-25 15:44:34,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319887955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:44:34,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:44:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 15:44:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225311128] [2023-12-25 15:44:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:44:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 15:44:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:44:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 15:44:34,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:44:34,906 INFO L87 Difference]: Start difference. First operand 38769 states and 63864 transitions. Second operand has 13 states, 13 states have (on average 39.15384615384615) internal successors, (509), 12 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:44:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:44:53,551 INFO L93 Difference]: Finished difference Result 88573 states and 146264 transitions. [2023-12-25 15:44:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 15:44:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 39.15384615384615) internal successors, (509), 12 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:44:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:44:53,599 INFO L225 Difference]: With dead ends: 88573 [2023-12-25 15:44:53,599 INFO L226 Difference]: Without dead ends: 51871 [2023-12-25 15:44:53,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=893, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 15:44:53,617 INFO L413 NwaCegarLoop]: 35831 mSDtfsCounter, 98392 mSDsluCounter, 302936 mSDsCounter, 0 mSdLazyCounter, 42749 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98392 SdHoareTripleChecker+Valid, 338767 SdHoareTripleChecker+Invalid, 42750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:44:53,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98392 Valid, 338767 Invalid, 42750 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1 Valid, 42749 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2023-12-25 15:44:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51871 states. [2023-12-25 15:44:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51871 to 38766. [2023-12-25 15:44:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38766 states, 38765 states have (on average 1.6473881078292274) internal successors, (63861), 38765 states have internal predecessors, (63861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:44:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38766 states to 38766 states and 63861 transitions. [2023-12-25 15:44:54,177 INFO L78 Accepts]: Start accepts. Automaton has 38766 states and 63861 transitions. Word has length 509 [2023-12-25 15:44:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:44:54,178 INFO L495 AbstractCegarLoop]: Abstraction has 38766 states and 63861 transitions. [2023-12-25 15:44:54,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 39.15384615384615) internal successors, (509), 12 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:44:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 38766 states and 63861 transitions. [2023-12-25 15:44:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:44:54,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:44:54,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:44:54,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-25 15:44:54,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 15:44:54,393 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:44:54,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:44:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -306859349, now seen corresponding path program 1 times [2023-12-25 15:44:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:44:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108769539] [2023-12-25 15:44:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:44:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:44:54,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:44:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184491770] [2023-12-25 15:44:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:44:54,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:44:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:44:54,548 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:44:54,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-25 15:44:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:44:57,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 15:44:57,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:44:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:44:59,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:44:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:44:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108769539] [2023-12-25 15:44:59,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:44:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184491770] [2023-12-25 15:44:59,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184491770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:44:59,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:44:59,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:44:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822420220] [2023-12-25 15:44:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:44:59,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:44:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:44:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:44:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:44:59,162 INFO L87 Difference]: Start difference. First operand 38766 states and 63861 transitions. Second operand has 10 states, 10 states have (on average 50.9) internal successors, (509), 9 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:45:14,774 INFO L93 Difference]: Finished difference Result 126691 states and 209130 transitions. [2023-12-25 15:45:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 15:45:14,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 50.9) internal successors, (509), 9 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:45:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:45:14,847 INFO L225 Difference]: With dead ends: 126691 [2023-12-25 15:45:14,848 INFO L226 Difference]: Without dead ends: 89926 [2023-12-25 15:45:14,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2023-12-25 15:45:14,865 INFO L413 NwaCegarLoop]: 36405 mSDtfsCounter, 79549 mSDsluCounter, 130355 mSDsCounter, 0 mSdLazyCounter, 20481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79549 SdHoareTripleChecker+Valid, 166760 SdHoareTripleChecker+Invalid, 20482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:45:14,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79549 Valid, 166760 Invalid, 20482 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 20481 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-12-25 15:45:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89926 states. [2023-12-25 15:45:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89926 to 39212. [2023-12-25 15:45:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39212 states, 39211 states have (on average 1.645711662543674) internal successors, (64530), 39211 states have internal predecessors, (64530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39212 states to 39212 states and 64530 transitions. [2023-12-25 15:45:15,502 INFO L78 Accepts]: Start accepts. Automaton has 39212 states and 64530 transitions. Word has length 509 [2023-12-25 15:45:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:45:15,502 INFO L495 AbstractCegarLoop]: Abstraction has 39212 states and 64530 transitions. [2023-12-25 15:45:15,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.9) internal successors, (509), 9 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 39212 states and 64530 transitions. [2023-12-25 15:45:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:45:15,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:45:15,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:45:15,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-25 15:45:15,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-25 15:45:15,713 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:45:15,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:45:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -851731923, now seen corresponding path program 1 times [2023-12-25 15:45:15,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:45:15,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155007226] [2023-12-25 15:45:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:15,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:45:16,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:45:16,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240042007] [2023-12-25 15:45:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:16,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:16,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:45:16,068 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:45:16,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-25 15:45:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:45:19,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 15:45:19,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:45:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:45:20,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:45:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:45:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155007226] [2023-12-25 15:45:20,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:45:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240042007] [2023-12-25 15:45:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240042007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:45:20,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:45:20,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:45:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173970047] [2023-12-25 15:45:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:45:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:45:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:45:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:45:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:45:20,549 INFO L87 Difference]: Start difference. First operand 39212 states and 64530 transitions. Second operand has 11 states, 11 states have (on average 46.27272727272727) internal successors, (509), 10 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:45:28,913 INFO L93 Difference]: Finished difference Result 77720 states and 128119 transitions. [2023-12-25 15:45:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 15:45:28,913 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 46.27272727272727) internal successors, (509), 10 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:45:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:45:28,949 INFO L225 Difference]: With dead ends: 77720 [2023-12-25 15:45:28,949 INFO L226 Difference]: Without dead ends: 40666 [2023-12-25 15:45:28,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-12-25 15:45:28,960 INFO L413 NwaCegarLoop]: 37574 mSDtfsCounter, 79514 mSDsluCounter, 227190 mSDsCounter, 0 mSdLazyCounter, 16330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79514 SdHoareTripleChecker+Valid, 264764 SdHoareTripleChecker+Invalid, 16332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:45:28,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79514 Valid, 264764 Invalid, 16332 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [2 Valid, 16330 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-25 15:45:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40666 states. [2023-12-25 15:45:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40666 to 39005. [2023-12-25 15:45:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39005 states, 39004 states have (on average 1.6463952415136909) internal successors, (64216), 39004 states have internal predecessors, (64216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39005 states to 39005 states and 64216 transitions. [2023-12-25 15:45:29,519 INFO L78 Accepts]: Start accepts. Automaton has 39005 states and 64216 transitions. Word has length 509 [2023-12-25 15:45:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:45:29,520 INFO L495 AbstractCegarLoop]: Abstraction has 39005 states and 64216 transitions. [2023-12-25 15:45:29,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.27272727272727) internal successors, (509), 10 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 39005 states and 64216 transitions. [2023-12-25 15:45:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:45:29,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:45:29,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:45:29,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-25 15:45:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:29,741 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:45:29,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:45:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1421188055, now seen corresponding path program 1 times [2023-12-25 15:45:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:45:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703021279] [2023-12-25 15:45:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:45:29,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:45:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145616917] [2023-12-25 15:45:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:29,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:29,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:45:29,906 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:45:29,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-25 15:45:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:45:33,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 15:45:33,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:45:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:45:33,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:45:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:45:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703021279] [2023-12-25 15:45:33,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:45:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145616917] [2023-12-25 15:45:33,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145616917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:45:33,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:45:33,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:45:33,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79349686] [2023-12-25 15:45:33,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:45:33,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:45:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:45:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:45:33,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:45:33,300 INFO L87 Difference]: Start difference. First operand 39005 states and 64216 transitions. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:45:33,716 INFO L93 Difference]: Finished difference Result 76551 states and 126065 transitions. [2023-12-25 15:45:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:45:33,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:45:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:45:33,752 INFO L225 Difference]: With dead ends: 76551 [2023-12-25 15:45:33,752 INFO L226 Difference]: Without dead ends: 39055 [2023-12-25 15:45:33,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:45:33,776 INFO L413 NwaCegarLoop]: 20183 mSDtfsCounter, 20 mSDsluCounter, 40349 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 60532 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:45:33,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 60532 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:45:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39055 states. [2023-12-25 15:45:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39055 to 39012. [2023-12-25 15:45:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39012 states, 39011 states have (on average 1.646279254569224) internal successors, (64223), 39011 states have internal predecessors, (64223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39012 states to 39012 states and 64223 transitions. [2023-12-25 15:45:34,280 INFO L78 Accepts]: Start accepts. Automaton has 39012 states and 64223 transitions. Word has length 509 [2023-12-25 15:45:34,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:45:34,280 INFO L495 AbstractCegarLoop]: Abstraction has 39012 states and 64223 transitions. [2023-12-25 15:45:34,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:34,280 INFO L276 IsEmpty]: Start isEmpty. Operand 39012 states and 64223 transitions. [2023-12-25 15:45:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:45:34,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:45:34,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:45:34,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-25 15:45:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:34,504 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:45:34,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:45:34,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1375860649, now seen corresponding path program 1 times [2023-12-25 15:45:34,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:45:34,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231143845] [2023-12-25 15:45:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:45:34,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:45:34,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465122974] [2023-12-25 15:45:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:34,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:45:34,861 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:45:34,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-25 15:45:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:45:37,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 15:45:37,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:45:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:45:38,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:45:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:45:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231143845] [2023-12-25 15:45:38,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:45:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465122974] [2023-12-25 15:45:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465122974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:45:38,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:45:38,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:45:38,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080436183] [2023-12-25 15:45:38,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:45:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:45:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:45:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:45:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:45:38,126 INFO L87 Difference]: Start difference. First operand 39012 states and 64223 transitions. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:45:38,414 INFO L93 Difference]: Finished difference Result 76262 states and 125706 transitions. [2023-12-25 15:45:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:45:38,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:45:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:45:38,457 INFO L225 Difference]: With dead ends: 76262 [2023-12-25 15:45:38,457 INFO L226 Difference]: Without dead ends: 39045 [2023-12-25 15:45:38,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:45:38,485 INFO L413 NwaCegarLoop]: 20177 mSDtfsCounter, 19829 mSDsluCounter, 20169 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19829 SdHoareTripleChecker+Valid, 40346 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:45:38,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19829 Valid, 40346 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:45:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39045 states. [2023-12-25 15:45:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39045 to 39005. [2023-12-25 15:45:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39005 states, 39004 states have (on average 1.6463952415136909) internal successors, (64216), 39004 states have internal predecessors, (64216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39005 states to 39005 states and 64216 transitions. [2023-12-25 15:45:39,132 INFO L78 Accepts]: Start accepts. Automaton has 39005 states and 64216 transitions. Word has length 509 [2023-12-25 15:45:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:45:39,132 INFO L495 AbstractCegarLoop]: Abstraction has 39005 states and 64216 transitions. [2023-12-25 15:45:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 39005 states and 64216 transitions. [2023-12-25 15:45:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-25 15:45:39,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:45:39,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:45:39,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-25 15:45:39,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-25 15:45:39,345 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:45:39,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:45:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash -481291201, now seen corresponding path program 1 times [2023-12-25 15:45:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:45:39,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945484484] [2023-12-25 15:45:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:39,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:45:39,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:45:39,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904213532] [2023-12-25 15:45:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:39,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:39,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:45:39,528 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:45:39,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-25 15:45:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:45:42,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 15:45:42,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:45:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:45:42,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:45:42,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:45:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945484484] [2023-12-25 15:45:42,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:45:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904213532] [2023-12-25 15:45:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904213532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:45:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:45:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 15:45:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697995906] [2023-12-25 15:45:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:45:42,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 15:45:42,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:45:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 15:45:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:45:42,863 INFO L87 Difference]: Start difference. First operand 39005 states and 64216 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:45:43,229 INFO L93 Difference]: Finished difference Result 76229 states and 125661 transitions. [2023-12-25 15:45:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 15:45:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 509 [2023-12-25 15:45:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:45:43,256 INFO L225 Difference]: With dead ends: 76229 [2023-12-25 15:45:43,256 INFO L226 Difference]: Without dead ends: 39019 [2023-12-25 15:45:43,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 15:45:43,267 INFO L413 NwaCegarLoop]: 20182 mSDtfsCounter, 10 mSDsluCounter, 20170 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40352 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:45:43,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40352 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:45:43,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39019 states. [2023-12-25 15:45:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39019 to 39005. [2023-12-25 15:45:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39005 states, 39004 states have (on average 1.6462414111373191) internal successors, (64210), 39004 states have internal predecessors, (64210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39005 states to 39005 states and 64210 transitions. [2023-12-25 15:45:43,757 INFO L78 Accepts]: Start accepts. Automaton has 39005 states and 64210 transitions. Word has length 509 [2023-12-25 15:45:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:45:43,757 INFO L495 AbstractCegarLoop]: Abstraction has 39005 states and 64210 transitions. [2023-12-25 15:45:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:45:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 39005 states and 64210 transitions. [2023-12-25 15:45:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-25 15:45:43,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:45:43,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:45:43,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-25 15:45:43,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:43,976 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:45:43,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:45:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -343891529, now seen corresponding path program 1 times [2023-12-25 15:45:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:45:43,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950863847] [2023-12-25 15:45:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:43,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:45:44,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 15:45:44,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510225862] [2023-12-25 15:45:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:45:44,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:45:44,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:45:44,251 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:45:44,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-25 15:45:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:45:49,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-25 15:45:49,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:45:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:45:51,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:45:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:45:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950863847] [2023-12-25 15:45:51,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 15:45:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510225862] [2023-12-25 15:45:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510225862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:45:51,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:45:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:45:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101976758] [2023-12-25 15:45:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:45:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:45:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:45:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:45:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:45:51,822 INFO L87 Difference]: Start difference. First operand 39005 states and 64210 transitions. Second operand has 8 states, 8 states have (on average 63.75) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)