/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-13.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:29:17,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:29:17,324 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:29:17,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:29:17,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:29:17,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:29:17,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:29:17,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:29:17,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:29:17,356 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:29:17,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:29:17,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:29:17,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:29:17,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:29:17,358 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:29:17,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:29:17,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:29:17,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:29:17,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:29:17,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:29:17,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:29:17,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:29:17,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:29:17,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:29:17,360 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:29:17,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:29:17,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:29:17,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:29:17,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:29:17,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:29:17,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:29:17,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:29:17,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:29:17,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:29:17,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:29:17,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:29:17,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:29:17,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:29:17,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:29:17,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:29:17,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:29:17,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:29:17,617 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:29:17,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-13.i [2023-12-19 07:29:18,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:29:19,141 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:29:19,141 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-13.i [2023-12-19 07:29:19,151 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780a59ee2/8e5fa39ad52f41399067413dc8f58e9d/FLAGc9f7cb91f [2023-12-19 07:29:19,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780a59ee2/8e5fa39ad52f41399067413dc8f58e9d [2023-12-19 07:29:19,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:29:19,164 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:29:19,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:29:19,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:29:19,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:29:19,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac2b57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19, skipping insertion in model container [2023-12-19 07:29:19,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:29:19,341 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-13.i[916,929] [2023-12-19 07:29:19,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:29:19,504 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:29:19,519 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-13.i[916,929] [2023-12-19 07:29:19,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:29:19,624 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:29:19,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19 WrapperNode [2023-12-19 07:29:19,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:29:19,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:29:19,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:29:19,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:29:19,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,761 INFO L138 Inliner]: procedures = 26, calls = 114, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 856 [2023-12-19 07:29:19,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:29:19,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:29:19,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:29:19,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:29:19,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,787 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,834 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]. [2023-12-19 07:29:19,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:29:19,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:29:19,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:29:19,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:29:19,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (1/1) ... [2023-12-19 07:29:19,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:29:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:19,946 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) [2023-12-19 07:29:19,977 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 [2023-12-19 07:29:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:29:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:29:19,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:29:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:29:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:29:19,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:29:20,162 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:29:20,165 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:29:21,103 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:29:21,162 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:29:21,162 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:29:21,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:29:21 BoogieIcfgContainer [2023-12-19 07:29:21,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:29:21,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:29:21,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:29:21,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:29:21,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:29:19" (1/3) ... [2023-12-19 07:29:21,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e96247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:29:21, skipping insertion in model container [2023-12-19 07:29:21,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:19" (2/3) ... [2023-12-19 07:29:21,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e96247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:29:21, skipping insertion in model container [2023-12-19 07:29:21,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:29:21" (3/3) ... [2023-12-19 07:29:21,172 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-13.i [2023-12-19 07:29:21,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:29:21,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:29:21,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:29:21,259 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;@4b63a635, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:29:21,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:29:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 221 states have (on average 1.665158371040724) internal successors, (368), 222 states have internal predecessors, (368), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-19 07:29:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-12-19 07:29:21,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:21,302 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:21,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:21,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1617464224, now seen corresponding path program 1 times [2023-12-19 07:29:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194151541] [2023-12-19 07:29:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:21,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:21,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194151541] [2023-12-19 07:29:21,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:29:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607519812] [2023-12-19 07:29:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:21,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:21,653 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) [2023-12-19 07:29:21,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:29:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:22,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:29:22,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 20000 trivial. 0 not checked. [2023-12-19 07:29:22,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607519812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:29:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188110658] [2023-12-19 07:29:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:22,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:29:22,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:29:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:29:22,212 INFO L87 Difference]: Start difference. First operand has 325 states, 221 states have (on average 1.665158371040724) internal successors, (368), 222 states have internal predecessors, (368), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-19 07:29:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:22,274 INFO L93 Difference]: Finished difference Result 645 states and 1235 transitions. [2023-12-19 07:29:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:29:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) Word has length 659 [2023-12-19 07:29:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:22,292 INFO L225 Difference]: With dead ends: 645 [2023-12-19 07:29:22,292 INFO L226 Difference]: Without dead ends: 321 [2023-12-19 07:29:22,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:29:22,307 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:22,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 554 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-19 07:29:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-12-19 07:29:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-19 07:29:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 557 transitions. [2023-12-19 07:29:22,390 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 557 transitions. Word has length 659 [2023-12-19 07:29:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:22,390 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 557 transitions. [2023-12-19 07:29:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-19 07:29:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 557 transitions. [2023-12-19 07:29:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-12-19 07:29:22,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:22,406 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:22,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:22,616 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 [2023-12-19 07:29:22,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:22,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1828214234, now seen corresponding path program 1 times [2023-12-19 07:29:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:22,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685455927] [2023-12-19 07:29:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:22,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:22,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621293620] [2023-12-19 07:29:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:22,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:22,748 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) [2023-12-19 07:29:22,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:29:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:23,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:23,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:23,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:23,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:23,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685455927] [2023-12-19 07:29:23,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:23,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621293620] [2023-12-19 07:29:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621293620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:23,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:23,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37014179] [2023-12-19 07:29:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:23,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:23,242 INFO L87 Difference]: Start difference. First operand 321 states and 557 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:23,348 INFO L93 Difference]: Finished difference Result 961 states and 1669 transitions. [2023-12-19 07:29:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 659 [2023-12-19 07:29:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:23,361 INFO L225 Difference]: With dead ends: 961 [2023-12-19 07:29:23,361 INFO L226 Difference]: Without dead ends: 641 [2023-12-19 07:29:23,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:23,365 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 517 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:23,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1496 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-12-19 07:29:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2023-12-19 07:29:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 434 states have (on average 1.6267281105990783) internal successors, (706), 434 states have internal predecessors, (706), 202 states have call successors, (202), 2 states have call predecessors, (202), 2 states have return successors, (202), 202 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-19 07:29:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1110 transitions. [2023-12-19 07:29:23,446 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1110 transitions. Word has length 659 [2023-12-19 07:29:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:23,448 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1110 transitions. [2023-12-19 07:29:23,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1110 transitions. [2023-12-19 07:29:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-12-19 07:29:23,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:23,460 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:23,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:23,670 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 [2023-12-19 07:29:23,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash -94109784, now seen corresponding path program 1 times [2023-12-19 07:29:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:23,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007414298] [2023-12-19 07:29:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:23,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:23,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370687679] [2023-12-19 07:29:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:23,771 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) [2023-12-19 07:29:23,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:29:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:24,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:24,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:24,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:24,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007414298] [2023-12-19 07:29:24,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:24,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370687679] [2023-12-19 07:29:24,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370687679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:24,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:24,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:29:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416807365] [2023-12-19 07:29:24,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:24,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:24,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:24,764 INFO L87 Difference]: Start difference. First operand 639 states and 1110 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:24,812 INFO L93 Difference]: Finished difference Result 1597 states and 2775 transitions. [2023-12-19 07:29:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 659 [2023-12-19 07:29:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:24,817 INFO L225 Difference]: With dead ends: 1597 [2023-12-19 07:29:24,817 INFO L226 Difference]: Without dead ends: 959 [2023-12-19 07:29:24,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:24,820 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 252 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1325 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 [2023-12-19 07:29:24,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1325 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-19 07:29:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 957. [2023-12-19 07:29:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 650 states have (on average 1.6276923076923078) internal successors, (1058), 650 states have internal predecessors, (1058), 303 states have call successors, (303), 3 states have call predecessors, (303), 3 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2023-12-19 07:29:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1664 transitions. [2023-12-19 07:29:24,921 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1664 transitions. Word has length 659 [2023-12-19 07:29:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:24,923 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1664 transitions. [2023-12-19 07:29:24,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1664 transitions. [2023-12-19 07:29:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-19 07:29:24,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:24,933 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:24,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:25,145 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 [2023-12-19 07:29:25,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:25,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1027499697, now seen corresponding path program 1 times [2023-12-19 07:29:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:25,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713857556] [2023-12-19 07:29:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:25,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:25,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696638706] [2023-12-19 07:29:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:25,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:25,237 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) [2023-12-19 07:29:25,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:29:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:25,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:25,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:25,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713857556] [2023-12-19 07:29:25,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696638706] [2023-12-19 07:29:25,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696638706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:25,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:25,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917904219] [2023-12-19 07:29:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:25,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:25,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:25,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:25,621 INFO L87 Difference]: Start difference. First operand 957 states and 1664 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:25,676 INFO L93 Difference]: Finished difference Result 1915 states and 3328 transitions. [2023-12-19 07:29:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:25,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 660 [2023-12-19 07:29:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:25,683 INFO L225 Difference]: With dead ends: 1915 [2023-12-19 07:29:25,683 INFO L226 Difference]: Without dead ends: 1277 [2023-12-19 07:29:25,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:25,685 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 544 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1469 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 [2023-12-19 07:29:25,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1469 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-12-19 07:29:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1275. [2023-12-19 07:29:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 866 states have (on average 1.625866050808314) internal successors, (1408), 866 states have internal predecessors, (1408), 404 states have call successors, (404), 4 states have call predecessors, (404), 4 states have return successors, (404), 404 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-19 07:29:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 2216 transitions. [2023-12-19 07:29:25,796 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 2216 transitions. Word has length 660 [2023-12-19 07:29:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:25,797 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 2216 transitions. [2023-12-19 07:29:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 2216 transitions. [2023-12-19 07:29:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-19 07:29:25,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:25,802 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:25,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:26,010 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 [2023-12-19 07:29:26,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:26,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash -871244748, now seen corresponding path program 1 times [2023-12-19 07:29:26,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:26,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008596634] [2023-12-19 07:29:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:26,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:26,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:26,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488103835] [2023-12-19 07:29:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:26,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:26,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:26,068 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) [2023-12-19 07:29:26,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:29:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:26,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:29:26,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:26,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:26,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008596634] [2023-12-19 07:29:26,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488103835] [2023-12-19 07:29:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488103835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:26,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:26,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:26,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231907741] [2023-12-19 07:29:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:29:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:29:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:29:26,981 INFO L87 Difference]: Start difference. First operand 1275 states and 2216 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:27,111 INFO L93 Difference]: Finished difference Result 3839 states and 6678 transitions. [2023-12-19 07:29:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:29:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 660 [2023-12-19 07:29:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:27,124 INFO L225 Difference]: With dead ends: 3839 [2023-12-19 07:29:27,125 INFO L226 Difference]: Without dead ends: 2565 [2023-12-19 07:29:27,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:29:27,129 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 242 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:27,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1644 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2023-12-19 07:29:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2551. [2023-12-19 07:29:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2551 states, 1734 states have (on average 1.6251441753171858) internal successors, (2818), 1734 states have internal predecessors, (2818), 808 states have call successors, (808), 8 states have call predecessors, (808), 8 states have return successors, (808), 808 states have call predecessors, (808), 808 states have call successors, (808) [2023-12-19 07:29:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 4434 transitions. [2023-12-19 07:29:27,372 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 4434 transitions. Word has length 660 [2023-12-19 07:29:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:27,373 INFO L495 AbstractCegarLoop]: Abstraction has 2551 states and 4434 transitions. [2023-12-19 07:29:27,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 4434 transitions. [2023-12-19 07:29:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-19 07:29:27,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:27,378 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:27,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:27,579 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 [2023-12-19 07:29:27,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:27,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1265611534, now seen corresponding path program 1 times [2023-12-19 07:29:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561689954] [2023-12-19 07:29:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:27,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:27,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852788662] [2023-12-19 07:29:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:27,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:27,627 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) [2023-12-19 07:29:27,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:29:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:27,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:27,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:28,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561689954] [2023-12-19 07:29:28,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852788662] [2023-12-19 07:29:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852788662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:28,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:28,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136639563] [2023-12-19 07:29:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:28,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:28,008 INFO L87 Difference]: Start difference. First operand 2551 states and 4434 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:28,154 INFO L93 Difference]: Finished difference Result 6563 states and 11484 transitions. [2023-12-19 07:29:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:28,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 660 [2023-12-19 07:29:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:28,171 INFO L225 Difference]: With dead ends: 6563 [2023-12-19 07:29:28,171 INFO L226 Difference]: Without dead ends: 4013 [2023-12-19 07:29:28,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:28,181 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 293 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:28,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1207 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2023-12-19 07:29:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 4003. [2023-12-19 07:29:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3002 states have (on average 1.6688874083944036) internal successors, (5010), 3010 states have internal predecessors, (5010), 984 states have call successors, (984), 16 states have call predecessors, (984), 16 states have return successors, (984), 976 states have call predecessors, (984), 984 states have call successors, (984) [2023-12-19 07:29:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6978 transitions. [2023-12-19 07:29:28,512 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6978 transitions. Word has length 660 [2023-12-19 07:29:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:28,513 INFO L495 AbstractCegarLoop]: Abstraction has 4003 states and 6978 transitions. [2023-12-19 07:29:28,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6978 transitions. [2023-12-19 07:29:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-19 07:29:28,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:28,520 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:28,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:28,728 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 [2023-12-19 07:29:28,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:28,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -498976846, now seen corresponding path program 1 times [2023-12-19 07:29:28,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:28,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537913819] [2023-12-19 07:29:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:28,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:28,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:28,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462883153] [2023-12-19 07:29:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:28,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:28,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:28,796 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) [2023-12-19 07:29:28,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:29:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:29,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:29,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:29,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537913819] [2023-12-19 07:29:29,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462883153] [2023-12-19 07:29:29,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462883153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:29,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:29,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155107867] [2023-12-19 07:29:29,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:29,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:29,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:29,186 INFO L87 Difference]: Start difference. First operand 4003 states and 6978 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:29,409 INFO L93 Difference]: Finished difference Result 11767 states and 20484 transitions. [2023-12-19 07:29:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:29,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 660 [2023-12-19 07:29:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:29,454 INFO L225 Difference]: With dead ends: 11767 [2023-12-19 07:29:29,454 INFO L226 Difference]: Without dead ends: 7765 [2023-12-19 07:29:29,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:29,474 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 496 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:29,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1096 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:29:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2023-12-19 07:29:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 7723. [2023-12-19 07:29:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 5722 states have (on average 1.623558196434813) internal successors, (9290), 5738 states have internal predecessors, (9290), 1968 states have call successors, (1968), 32 states have call predecessors, (1968), 32 states have return successors, (1968), 1952 states have call predecessors, (1968), 1968 states have call successors, (1968) [2023-12-19 07:29:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 13226 transitions. [2023-12-19 07:29:30,153 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 13226 transitions. Word has length 660 [2023-12-19 07:29:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:30,154 INFO L495 AbstractCegarLoop]: Abstraction has 7723 states and 13226 transitions. [2023-12-19 07:29:30,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 13226 transitions. [2023-12-19 07:29:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-19 07:29:30,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:30,163 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:30,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:30,367 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 [2023-12-19 07:29:30,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:30,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash 336078232, now seen corresponding path program 1 times [2023-12-19 07:29:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73391584] [2023-12-19 07:29:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:30,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:30,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013065253] [2023-12-19 07:29:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:30,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:30,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:30,464 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) [2023-12-19 07:29:30,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:29:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:30,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:30,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:30,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:30,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73391584] [2023-12-19 07:29:30,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013065253] [2023-12-19 07:29:30,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013065253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540249841] [2023-12-19 07:29:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:30,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:30,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:30,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:30,874 INFO L87 Difference]: Start difference. First operand 7723 states and 13226 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:31,244 INFO L93 Difference]: Finished difference Result 19719 states and 33236 transitions. [2023-12-19 07:29:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:31,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 663 [2023-12-19 07:29:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:31,290 INFO L225 Difference]: With dead ends: 19719 [2023-12-19 07:29:31,291 INFO L226 Difference]: Without dead ends: 11997 [2023-12-19 07:29:31,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:31,314 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 308 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:31,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1095 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11997 states. [2023-12-19 07:29:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11997 to 11979. [2023-12-19 07:29:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11979 states, 8042 states have (on average 1.5113155931360358) internal successors, (12154), 8090 states have internal predecessors, (12154), 3872 states have call successors, (3872), 64 states have call predecessors, (3872), 64 states have return successors, (3872), 3824 states have call predecessors, (3872), 3872 states have call successors, (3872) [2023-12-19 07:29:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11979 states to 11979 states and 19898 transitions. [2023-12-19 07:29:32,223 INFO L78 Accepts]: Start accepts. Automaton has 11979 states and 19898 transitions. Word has length 663 [2023-12-19 07:29:32,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:32,224 INFO L495 AbstractCegarLoop]: Abstraction has 11979 states and 19898 transitions. [2023-12-19 07:29:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11979 states and 19898 transitions. [2023-12-19 07:29:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-19 07:29:32,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:32,233 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:32,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:32,443 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 [2023-12-19 07:29:32,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:32,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 950906842, now seen corresponding path program 1 times [2023-12-19 07:29:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:32,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610200053] [2023-12-19 07:29:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:32,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602284619] [2023-12-19 07:29:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:32,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:32,497 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) [2023-12-19 07:29:32,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:29:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:32,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:32,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:32,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610200053] [2023-12-19 07:29:32,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602284619] [2023-12-19 07:29:32,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602284619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:32,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:32,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176801763] [2023-12-19 07:29:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:32,969 INFO L87 Difference]: Start difference. First operand 11979 states and 19898 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:33,779 INFO L93 Difference]: Finished difference Result 32487 states and 53284 transitions. [2023-12-19 07:29:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:33,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 663 [2023-12-19 07:29:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:33,861 INFO L225 Difference]: With dead ends: 32487 [2023-12-19 07:29:33,862 INFO L226 Difference]: Without dead ends: 20509 [2023-12-19 07:29:33,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:33,909 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 297 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:33,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1334 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2023-12-19 07:29:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 20475. [2023-12-19 07:29:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20475 states, 12858 states have (on average 1.4193498211230362) internal successors, (18250), 12970 states have internal predecessors, (18250), 7488 states have call successors, (7488), 128 states have call predecessors, (7488), 128 states have return successors, (7488), 7376 states have call predecessors, (7488), 7488 states have call successors, (7488) [2023-12-19 07:29:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20475 states to 20475 states and 33226 transitions. [2023-12-19 07:29:35,681 INFO L78 Accepts]: Start accepts. Automaton has 20475 states and 33226 transitions. Word has length 663 [2023-12-19 07:29:35,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:35,682 INFO L495 AbstractCegarLoop]: Abstraction has 20475 states and 33226 transitions. [2023-12-19 07:29:35,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20475 states and 33226 transitions. [2023-12-19 07:29:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-19 07:29:35,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:35,697 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:35,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:35,907 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 [2023-12-19 07:29:35,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:35,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 810358232, now seen corresponding path program 1 times [2023-12-19 07:29:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468837562] [2023-12-19 07:29:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:35,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564745489] [2023-12-19 07:29:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:35,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:35,972 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) [2023-12-19 07:29:36,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:29:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:36,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:29:36,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:36,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:36,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468837562] [2023-12-19 07:29:36,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564745489] [2023-12-19 07:29:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564745489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:36,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:36,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884394392] [2023-12-19 07:29:36,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:36,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:36,402 INFO L87 Difference]: Start difference. First operand 20475 states and 33226 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:37,319 INFO L93 Difference]: Finished difference Result 44663 states and 71828 transitions. [2023-12-19 07:29:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 663 [2023-12-19 07:29:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:37,465 INFO L225 Difference]: With dead ends: 44663 [2023-12-19 07:29:37,465 INFO L226 Difference]: Without dead ends: 24189 [2023-12-19 07:29:37,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:37,716 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 36 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:37,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1129 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24189 states. [2023-12-19 07:29:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24189 to 24059. [2023-12-19 07:29:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24059 states, 15546 states have (on average 1.4044770358934775) internal successors, (21834), 15786 states have internal predecessors, (21834), 8256 states have call successors, (8256), 256 states have call predecessors, (8256), 256 states have return successors, (8256), 8016 states have call predecessors, (8256), 8256 states have call successors, (8256) [2023-12-19 07:29:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24059 states to 24059 states and 38346 transitions. [2023-12-19 07:29:39,602 INFO L78 Accepts]: Start accepts. Automaton has 24059 states and 38346 transitions. Word has length 663 [2023-12-19 07:29:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:39,603 INFO L495 AbstractCegarLoop]: Abstraction has 24059 states and 38346 transitions. [2023-12-19 07:29:39,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 24059 states and 38346 transitions. [2023-12-19 07:29:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-19 07:29:39,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:39,618 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:39,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:39,827 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 [2023-12-19 07:29:39,828 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:39,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash -200759018, now seen corresponding path program 1 times [2023-12-19 07:29:39,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:39,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913428533] [2023-12-19 07:29:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:39,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:39,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:39,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652596483] [2023-12-19 07:29:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:39,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:39,878 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) [2023-12-19 07:29:39,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:29:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:40,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:29:40,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 9388 proven. 192 refuted. 0 times theorem prover too weak. 10620 trivial. 0 not checked. [2023-12-19 07:29:41,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 108 proven. 192 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:29:41,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:41,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913428533] [2023-12-19 07:29:41,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652596483] [2023-12-19 07:29:41,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652596483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:41,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:41,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-19 07:29:41,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519714368] [2023-12-19 07:29:41,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:41,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:29:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:29:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:29:41,900 INFO L87 Difference]: Start difference. First operand 24059 states and 38346 transitions. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2023-12-19 07:29:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:45,604 INFO L93 Difference]: Finished difference Result 90065 states and 142045 transitions. [2023-12-19 07:29:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 07:29:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) Word has length 663 [2023-12-19 07:29:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:45,876 INFO L225 Difference]: With dead ends: 90065 [2023-12-19 07:29:45,877 INFO L226 Difference]: Without dead ends: 66007 [2023-12-19 07:29:45,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:29:45,964 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1545 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:45,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 2544 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 07:29:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66007 states. [2023-12-19 07:29:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66007 to 64915. [2023-12-19 07:29:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64915 states, 43090 states have (on average 1.406219540496635) internal successors, (60594), 43826 states have internal predecessors, (60594), 20992 states have call successors, (20992), 832 states have call predecessors, (20992), 832 states have return successors, (20992), 20256 states have call predecessors, (20992), 20992 states have call successors, (20992) [2023-12-19 07:29:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64915 states to 64915 states and 102578 transitions. [2023-12-19 07:29:51,286 INFO L78 Accepts]: Start accepts. Automaton has 64915 states and 102578 transitions. Word has length 663 [2023-12-19 07:29:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:51,287 INFO L495 AbstractCegarLoop]: Abstraction has 64915 states and 102578 transitions. [2023-12-19 07:29:51,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2023-12-19 07:29:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64915 states and 102578 transitions. [2023-12-19 07:29:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-19 07:29:51,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:51,322 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:51,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:51,533 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 [2023-12-19 07:29:51,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:51,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash -255151916, now seen corresponding path program 1 times [2023-12-19 07:29:51,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829961928] [2023-12-19 07:29:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:51,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:51,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044318862] [2023-12-19 07:29:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:51,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:51,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:51,590 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) [2023-12-19 07:29:51,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:29:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:52,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:52,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 7230 proven. 231 refuted. 0 times theorem prover too weak. 12739 trivial. 0 not checked. [2023-12-19 07:29:52,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 69 proven. 231 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:29:53,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:53,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829961928] [2023-12-19 07:29:53,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044318862] [2023-12-19 07:29:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044318862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:53,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183641539] [2023-12-19 07:29:53,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:53,187 INFO L87 Difference]: Start difference. First operand 64915 states and 102578 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-19 07:29:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:54,884 INFO L93 Difference]: Finished difference Result 82013 states and 128919 transitions. [2023-12-19 07:29:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:29:54,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) Word has length 663 [2023-12-19 07:29:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:54,945 INFO L225 Difference]: With dead ends: 82013 [2023-12-19 07:29:54,945 INFO L226 Difference]: Without dead ends: 17099 [2023-12-19 07:29:55,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1318 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:29:55,047 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 312 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:55,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1088 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:29:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17099 states. [2023-12-19 07:29:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17099 to 16567. [2023-12-19 07:29:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16567 states, 9782 states have (on average 1.3148640359844612) internal successors, (12862), 9894 states have internal predecessors, (12862), 6464 states have call successors, (6464), 320 states have call predecessors, (6464), 320 states have return successors, (6464), 6352 states have call predecessors, (6464), 6464 states have call successors, (6464) [2023-12-19 07:29:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16567 states to 16567 states and 25790 transitions. [2023-12-19 07:29:56,451 INFO L78 Accepts]: Start accepts. Automaton has 16567 states and 25790 transitions. Word has length 663 [2023-12-19 07:29:56,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:56,452 INFO L495 AbstractCegarLoop]: Abstraction has 16567 states and 25790 transitions. [2023-12-19 07:29:56,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-19 07:29:56,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16567 states and 25790 transitions. [2023-12-19 07:29:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-12-19 07:29:56,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:56,462 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:29:56,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:56,670 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 [2023-12-19 07:29:56,671 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash -227401961, now seen corresponding path program 1 times [2023-12-19 07:29:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:56,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292403644] [2023-12-19 07:29:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:56,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536813008] [2023-12-19 07:29:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:56,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:56,725 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) [2023-12-19 07:29:56,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:29:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:57,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 07:29:57,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:29:58,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:58,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292403644] [2023-12-19 07:29:58,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536813008] [2023-12-19 07:29:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536813008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:58,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:58,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:29:58,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624349991] [2023-12-19 07:29:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:58,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:29:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:29:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:29:58,652 INFO L87 Difference]: Start difference. First operand 16567 states and 25790 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:29:59,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:59,788 INFO L93 Difference]: Finished difference Result 36481 states and 56751 transitions. [2023-12-19 07:29:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:29:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 664 [2023-12-19 07:29:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:59,838 INFO L225 Difference]: With dead ends: 36481 [2023-12-19 07:29:59,838 INFO L226 Difference]: Without dead ends: 19915 [2023-12-19 07:29:59,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:29:59,887 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 550 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:59,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2478 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:29:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19915 states. [2023-12-19 07:30:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19915 to 18233. [2023-12-19 07:30:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18233 states, 11342 states have (on average 1.343590195732675) internal successors, (15239), 11454 states have internal predecessors, (15239), 6565 states have call successors, (6565), 325 states have call predecessors, (6565), 325 states have return successors, (6565), 6453 states have call predecessors, (6565), 6565 states have call successors, (6565) [2023-12-19 07:30:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18233 states to 18233 states and 28369 transitions. [2023-12-19 07:30:01,588 INFO L78 Accepts]: Start accepts. Automaton has 18233 states and 28369 transitions. Word has length 664 [2023-12-19 07:30:01,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:01,589 INFO L495 AbstractCegarLoop]: Abstraction has 18233 states and 28369 transitions. [2023-12-19 07:30:01,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18233 states and 28369 transitions. [2023-12-19 07:30:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-12-19 07:30:01,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:01,597 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:01,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:30:01,798 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 [2023-12-19 07:30:01,799 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:01,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1248470315, now seen corresponding path program 1 times [2023-12-19 07:30:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175026824] [2023-12-19 07:30:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:01,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:01,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587502045] [2023-12-19 07:30:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:01,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:01,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:01,853 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) [2023-12-19 07:30:01,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:30:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:02,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:30:02,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:30:02,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:30:02,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:02,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175026824] [2023-12-19 07:30:02,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:02,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587502045] [2023-12-19 07:30:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587502045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:30:02,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:30:02,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:30:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624765719] [2023-12-19 07:30:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:30:02,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:30:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:30:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:30:02,281 INFO L87 Difference]: Start difference. First operand 18233 states and 28369 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:03,133 INFO L93 Difference]: Finished difference Result 37041 states and 57551 transitions. [2023-12-19 07:30:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:30:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 664 [2023-12-19 07:30:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:03,187 INFO L225 Difference]: With dead ends: 37041 [2023-12-19 07:30:03,187 INFO L226 Difference]: Without dead ends: 20475 [2023-12-19 07:30:03,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:30:03,226 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 18 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:03,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1068 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:30:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20475 states. [2023-12-19 07:30:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20475 to 19961. [2023-12-19 07:30:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19961 states, 13070 states have (on average 1.3667176740627391) internal successors, (17863), 13182 states have internal predecessors, (17863), 6565 states have call successors, (6565), 325 states have call predecessors, (6565), 325 states have return successors, (6565), 6453 states have call predecessors, (6565), 6565 states have call successors, (6565) [2023-12-19 07:30:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19961 states to 19961 states and 30993 transitions. [2023-12-19 07:30:05,029 INFO L78 Accepts]: Start accepts. Automaton has 19961 states and 30993 transitions. Word has length 664 [2023-12-19 07:30:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:05,030 INFO L495 AbstractCegarLoop]: Abstraction has 19961 states and 30993 transitions. [2023-12-19 07:30:05,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:05,031 INFO L276 IsEmpty]: Start isEmpty. Operand 19961 states and 30993 transitions. [2023-12-19 07:30:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-12-19 07:30:05,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:05,045 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:05,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:30:05,253 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 [2023-12-19 07:30:05,254 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:05,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1248410733, now seen corresponding path program 1 times [2023-12-19 07:30:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185901409] [2023-12-19 07:30:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:05,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:05,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116632092] [2023-12-19 07:30:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:05,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:05,314 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) [2023-12-19 07:30:05,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:30:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:05,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:30:05,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10200 proven. 150 refuted. 0 times theorem prover too weak. 9850 trivial. 0 not checked. [2023-12-19 07:30:06,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:30:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 150 proven. 150 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:30:07,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:07,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185901409] [2023-12-19 07:30:07,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:07,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116632092] [2023-12-19 07:30:07,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116632092] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:30:07,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:30:07,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 07:30:07,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15612922] [2023-12-19 07:30:07,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:30:07,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:30:07,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:30:07,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:30:07,154 INFO L87 Difference]: Start difference. First operand 19961 states and 30993 transitions. Second operand has 12 states, 12 states have (on average 23.5) internal successors, (282), 12 states have internal predecessors, (282), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2023-12-19 07:30:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:17,004 INFO L93 Difference]: Finished difference Result 143084 states and 220744 transitions. [2023-12-19 07:30:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 07:30:17,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 23.5) internal successors, (282), 12 states have internal predecessors, (282), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) Word has length 664 [2023-12-19 07:30:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:17,588 INFO L225 Difference]: With dead ends: 143084 [2023-12-19 07:30:17,589 INFO L226 Difference]: Without dead ends: 123593 [2023-12-19 07:30:17,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1349 GetRequests, 1320 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930 [2023-12-19 07:30:17,670 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 2367 mSDsluCounter, 5243 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 6482 SdHoareTripleChecker+Invalid, 5175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:17,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 6482 Invalid, 5175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 4429 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 07:30:17,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123593 states. [2023-12-19 07:30:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123593 to 39871. [2023-12-19 07:30:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39871 states, 26131 states have (on average 1.361524625923233) internal successors, (35578), 26355 states have internal predecessors, (35578), 13029 states have call successors, (13029), 710 states have call predecessors, (13029), 710 states have return successors, (13029), 12805 states have call predecessors, (13029), 13029 states have call successors, (13029) [2023-12-19 07:30:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39871 states to 39871 states and 61636 transitions. [2023-12-19 07:30:24,306 INFO L78 Accepts]: Start accepts. Automaton has 39871 states and 61636 transitions. Word has length 664 [2023-12-19 07:30:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:24,307 INFO L495 AbstractCegarLoop]: Abstraction has 39871 states and 61636 transitions. [2023-12-19 07:30:24,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.5) internal successors, (282), 12 states have internal predecessors, (282), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2023-12-19 07:30:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 39871 states and 61636 transitions. [2023-12-19 07:30:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-12-19 07:30:24,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:24,323 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:24,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 07:30:24,524 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 [2023-12-19 07:30:24,524 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:24,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash -814681647, now seen corresponding path program 1 times [2023-12-19 07:30:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:24,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791035959] [2023-12-19 07:30:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:24,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834596453] [2023-12-19 07:30:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:24,575 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) [2023-12-19 07:30:24,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:30:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:24,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:30:24,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:30:25,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:30:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791035959] [2023-12-19 07:30:25,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834596453] [2023-12-19 07:30:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834596453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:30:25,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:30:25,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:30:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956062509] [2023-12-19 07:30:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:30:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:30:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:30:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:30:25,471 INFO L87 Difference]: Start difference. First operand 39871 states and 61636 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:28,612 INFO L93 Difference]: Finished difference Result 79198 states and 122376 transitions. [2023-12-19 07:30:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:30:28,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 664 [2023-12-19 07:30:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:28,723 INFO L225 Difference]: With dead ends: 79198 [2023-12-19 07:30:28,723 INFO L226 Difference]: Without dead ends: 39790 [2023-12-19 07:30:28,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:30:28,795 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:28,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 533 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:30:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39790 states. [2023-12-19 07:30:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39790 to 39790. [2023-12-19 07:30:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39790 states, 26050 states have (on average 1.3594241842610364) internal successors, (35413), 26274 states have internal predecessors, (35413), 13029 states have call successors, (13029), 710 states have call predecessors, (13029), 710 states have return successors, (13029), 12805 states have call predecessors, (13029), 13029 states have call successors, (13029) [2023-12-19 07:30:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39790 states to 39790 states and 61471 transitions. [2023-12-19 07:30:33,015 INFO L78 Accepts]: Start accepts. Automaton has 39790 states and 61471 transitions. Word has length 664 [2023-12-19 07:30:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:33,015 INFO L495 AbstractCegarLoop]: Abstraction has 39790 states and 61471 transitions. [2023-12-19 07:30:33,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:33,016 INFO L276 IsEmpty]: Start isEmpty. Operand 39790 states and 61471 transitions. [2023-12-19 07:30:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-12-19 07:30:33,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:33,028 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:33,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:30:33,228 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 [2023-12-19 07:30:33,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:33,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1323959255, now seen corresponding path program 1 times [2023-12-19 07:30:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:33,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544303262] [2023-12-19 07:30:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:33,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410854337] [2023-12-19 07:30:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:33,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:33,281 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) [2023-12-19 07:30:33,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:30:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:33,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:30:33,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:30:34,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:30:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544303262] [2023-12-19 07:30:34,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410854337] [2023-12-19 07:30:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410854337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:30:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:30:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:30:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390719405] [2023-12-19 07:30:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:30:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:30:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:30:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:30:34,151 INFO L87 Difference]: Start difference. First operand 39790 states and 61471 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:35,838 INFO L93 Difference]: Finished difference Result 39792 states and 61472 transitions. [2023-12-19 07:30:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:30:35,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 664 [2023-12-19 07:30:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:36,019 INFO L225 Difference]: With dead ends: 39792 [2023-12-19 07:30:36,019 INFO L226 Difference]: Without dead ends: 20386 [2023-12-19 07:30:36,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:30:36,051 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 257 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:36,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 536 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:30:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20386 states. [2023-12-19 07:30:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20386 to 10387. [2023-12-19 07:30:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10387 states, 6871 states have (on average 1.366904380730607) internal successors, (9392), 6927 states have internal predecessors, (9392), 3333 states have call successors, (3333), 182 states have call predecessors, (3333), 182 states have return successors, (3333), 3277 states have call predecessors, (3333), 3333 states have call successors, (3333) [2023-12-19 07:30:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10387 states to 10387 states and 16058 transitions. [2023-12-19 07:30:37,426 INFO L78 Accepts]: Start accepts. Automaton has 10387 states and 16058 transitions. Word has length 664 [2023-12-19 07:30:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:37,427 INFO L495 AbstractCegarLoop]: Abstraction has 10387 states and 16058 transitions. [2023-12-19 07:30:37,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:30:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10387 states and 16058 transitions. [2023-12-19 07:30:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-19 07:30:37,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:37,434 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:37,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:30:37,643 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 [2023-12-19 07:30:37,644 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:37,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1297169647, now seen corresponding path program 1 times [2023-12-19 07:30:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593468787] [2023-12-19 07:30:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:37,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390802117] [2023-12-19 07:30:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:37,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:37,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:37,700 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) [2023-12-19 07:30:37,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:30:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:38,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 07:30:38,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10252 proven. 294 refuted. 0 times theorem prover too weak. 9654 trivial. 0 not checked. [2023-12-19 07:30:38,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:30:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 150 proven. 150 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:30:39,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593468787] [2023-12-19 07:30:39,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390802117] [2023-12-19 07:30:39,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390802117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:30:39,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:30:39,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-12-19 07:30:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794728587] [2023-12-19 07:30:39,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:30:39,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 07:30:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 07:30:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:30:39,175 INFO L87 Difference]: Start difference. First operand 10387 states and 16058 transitions. Second operand has 15 states, 15 states have (on average 17.4) internal successors, (261), 14 states have internal predecessors, (261), 4 states have call successors, (151), 3 states have call predecessors, (151), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2023-12-19 07:30:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:46,683 INFO L93 Difference]: Finished difference Result 66392 states and 99996 transitions. [2023-12-19 07:30:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-19 07:30:46,683 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.4) internal successors, (261), 14 states have internal predecessors, (261), 4 states have call successors, (151), 3 states have call predecessors, (151), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) Word has length 665 [2023-12-19 07:30:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:46,855 INFO L225 Difference]: With dead ends: 66392 [2023-12-19 07:30:46,855 INFO L226 Difference]: Without dead ends: 56255 [2023-12-19 07:30:46,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1375 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=745, Invalid=2117, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 07:30:46,903 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 3360 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 1449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1449 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:46,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3412 Valid, 3672 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1449 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 07:30:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56255 states. [2023-12-19 07:30:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56255 to 17127. [2023-12-19 07:30:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17127 states, 12345 states have (on average 1.4004050222762252) internal successors, (17288), 12465 states have internal predecessors, (17288), 4421 states have call successors, (4421), 360 states have call predecessors, (4421), 360 states have return successors, (4421), 4301 states have call predecessors, (4421), 4421 states have call successors, (4421) [2023-12-19 07:30:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17127 states to 17127 states and 26130 transitions. [2023-12-19 07:30:49,598 INFO L78 Accepts]: Start accepts. Automaton has 17127 states and 26130 transitions. Word has length 665 [2023-12-19 07:30:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:49,599 INFO L495 AbstractCegarLoop]: Abstraction has 17127 states and 26130 transitions. [2023-12-19 07:30:49,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.4) internal successors, (261), 14 states have internal predecessors, (261), 4 states have call successors, (151), 3 states have call predecessors, (151), 5 states have return successors, (152), 4 states have call predecessors, (152), 4 states have call successors, (152) [2023-12-19 07:30:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 17127 states and 26130 transitions. [2023-12-19 07:30:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-19 07:30:49,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:49,609 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:49,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:30:49,809 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 [2023-12-19 07:30:49,810 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:49,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:49,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2114288659, now seen corresponding path program 1 times [2023-12-19 07:30:49,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:49,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420494614] [2023-12-19 07:30:49,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:49,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:49,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719289928] [2023-12-19 07:30:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:49,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:49,860 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) [2023-12-19 07:30:49,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:30:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:50,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:30:50,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10128 proven. 162 refuted. 0 times theorem prover too weak. 9910 trivial. 0 not checked. [2023-12-19 07:30:50,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:30:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 138 proven. 162 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:30:50,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:50,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420494614] [2023-12-19 07:30:50,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719289928] [2023-12-19 07:30:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719289928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:30:50,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:30:50,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:30:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666912751] [2023-12-19 07:30:50,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:30:50,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:30:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:50,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:30:50,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:30:50,854 INFO L87 Difference]: Start difference. First operand 17127 states and 26130 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 3 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) [2023-12-19 07:30:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:53,398 INFO L93 Difference]: Finished difference Result 34232 states and 51805 transitions. [2023-12-19 07:30:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:30:53,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 3 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) Word has length 665 [2023-12-19 07:30:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:53,439 INFO L225 Difference]: With dead ends: 34232 [2023-12-19 07:30:53,439 INFO L226 Difference]: Without dead ends: 17510 [2023-12-19 07:30:53,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1332 GetRequests, 1322 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:30:53,468 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 939 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:53,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1042 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:30:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17510 states. [2023-12-19 07:30:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17510 to 17054. [2023-12-19 07:30:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17054 states, 12239 states have (on average 1.390799901952774) internal successors, (17022), 12359 states have internal predecessors, (17022), 4421 states have call successors, (4421), 393 states have call predecessors, (4421), 393 states have return successors, (4421), 4301 states have call predecessors, (4421), 4421 states have call successors, (4421) [2023-12-19 07:30:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17054 states to 17054 states and 25864 transitions. [2023-12-19 07:30:55,509 INFO L78 Accepts]: Start accepts. Automaton has 17054 states and 25864 transitions. Word has length 665 [2023-12-19 07:30:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:55,510 INFO L495 AbstractCegarLoop]: Abstraction has 17054 states and 25864 transitions. [2023-12-19 07:30:55,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 3 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) [2023-12-19 07:30:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 17054 states and 25864 transitions. [2023-12-19 07:30:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-12-19 07:30:55,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:55,520 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:30:55,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 07:30:55,720 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 [2023-12-19 07:30:55,720 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:55,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash -112073231, now seen corresponding path program 1 times [2023-12-19 07:30:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:55,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874389779] [2023-12-19 07:30:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:55,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:55,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790563378] [2023-12-19 07:30:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:55,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:55,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:55,766 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) [2023-12-19 07:30:55,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:30:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:56,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:30:56,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10180 proven. 156 refuted. 0 times theorem prover too weak. 9864 trivial. 0 not checked. [2023-12-19 07:30:56,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:30:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 144 proven. 156 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:30:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874389779] [2023-12-19 07:30:56,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790563378] [2023-12-19 07:30:56,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790563378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:30:56,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:30:56,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:30:56,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883732594] [2023-12-19 07:30:56,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:30:56,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:30:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:30:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:30:56,848 INFO L87 Difference]: Start difference. First operand 17054 states and 25864 transitions. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 3 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 3 states have call predecessors, (154), 3 states have call successors, (154) [2023-12-19 07:30:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:59,159 INFO L93 Difference]: Finished difference Result 33380 states and 50236 transitions. [2023-12-19 07:30:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:30:59,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 3 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 3 states have call predecessors, (154), 3 states have call successors, (154) Word has length 666 [2023-12-19 07:30:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:59,214 INFO L225 Difference]: With dead ends: 33380 [2023-12-19 07:30:59,214 INFO L226 Difference]: Without dead ends: 17642 [2023-12-19 07:30:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1324 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:30:59,245 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 547 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1062 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:30:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17642 states. [2023-12-19 07:31:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17642 to 17186. [2023-12-19 07:31:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17186 states, 12338 states have (on average 1.3866915221267628) internal successors, (17109), 12458 states have internal predecessors, (17109), 4421 states have call successors, (4421), 426 states have call predecessors, (4421), 426 states have return successors, (4421), 4301 states have call predecessors, (4421), 4421 states have call successors, (4421) [2023-12-19 07:31:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17186 states to 17186 states and 25951 transitions. [2023-12-19 07:31:01,429 INFO L78 Accepts]: Start accepts. Automaton has 17186 states and 25951 transitions. Word has length 666 [2023-12-19 07:31:01,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:01,430 INFO L495 AbstractCegarLoop]: Abstraction has 17186 states and 25951 transitions. [2023-12-19 07:31:01,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 3 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 3 states have call predecessors, (154), 3 states have call successors, (154) [2023-12-19 07:31:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 17186 states and 25951 transitions. [2023-12-19 07:31:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-12-19 07:31:01,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:01,441 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:31:01,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 07:31:01,653 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 [2023-12-19 07:31:01,654 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:01,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1388224701, now seen corresponding path program 1 times [2023-12-19 07:31:01,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:01,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684998300] [2023-12-19 07:31:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:01,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:01,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:01,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087641621] [2023-12-19 07:31:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:01,698 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) [2023-12-19 07:31:01,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 07:31:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:02,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 07:31:02,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 13548 proven. 462 refuted. 0 times theorem prover too weak. 6190 trivial. 0 not checked. [2023-12-19 07:31:05,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:31:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 132 proven. 168 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-19 07:31:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684998300] [2023-12-19 07:31:07,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087641621] [2023-12-19 07:31:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087641621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:31:07,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:31:07,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 20 [2023-12-19 07:31:07,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019780653] [2023-12-19 07:31:07,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:31:07,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 07:31:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 07:31:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:31:07,632 INFO L87 Difference]: Start difference. First operand 17186 states and 25951 transitions. Second operand has 20 states, 20 states have (on average 14.1) internal successors, (282), 19 states have internal predecessors, (282), 7 states have call successors, (202), 6 states have call predecessors, (202), 9 states have return successors, (202), 7 states have call predecessors, (202), 7 states have call successors, (202) [2023-12-19 07:31:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:39,007 INFO L93 Difference]: Finished difference Result 186702 states and 278008 transitions. [2023-12-19 07:31:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-19 07:31:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.1) internal successors, (282), 19 states have internal predecessors, (282), 7 states have call successors, (202), 6 states have call predecessors, (202), 9 states have return successors, (202), 7 states have call predecessors, (202), 7 states have call successors, (202) Word has length 666 [2023-12-19 07:31:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:39,452 INFO L225 Difference]: With dead ends: 186702 [2023-12-19 07:31:39,452 INFO L226 Difference]: Without dead ends: 169798 [2023-12-19 07:31:39,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1409 GetRequests, 1312 SyntacticMatches, 15 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1606, Invalid=5366, Unknown=0, NotChecked=0, Total=6972 [2023-12-19 07:31:39,532 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4041 mSDsluCounter, 6669 mSDsCounter, 0 mSdLazyCounter, 5317 mSolverCounterSat, 1504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 8162 SdHoareTripleChecker+Invalid, 6821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1504 IncrementalHoareTripleChecker+Valid, 5317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:39,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 8162 Invalid, 6821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1504 Valid, 5317 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 07:31:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169798 states. [2023-12-19 07:31:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169798 to 118608. [2023-12-19 07:31:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118608 states, 88636 states have (on average 1.4018908795523264) internal successors, (124258), 89556 states have internal predecessors, (124258), 26821 states have call successors, (26821), 3150 states have call predecessors, (26821), 3150 states have return successors, (26821), 25901 states have call predecessors, (26821), 26821 states have call successors, (26821) [2023-12-19 07:31:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118608 states to 118608 states and 177900 transitions. [2023-12-19 07:31:59,161 INFO L78 Accepts]: Start accepts. Automaton has 118608 states and 177900 transitions. Word has length 666 [2023-12-19 07:31:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:59,162 INFO L495 AbstractCegarLoop]: Abstraction has 118608 states and 177900 transitions. [2023-12-19 07:31:59,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.1) internal successors, (282), 19 states have internal predecessors, (282), 7 states have call successors, (202), 6 states have call predecessors, (202), 9 states have return successors, (202), 7 states have call predecessors, (202), 7 states have call successors, (202) [2023-12-19 07:31:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 118608 states and 177900 transitions. [2023-12-19 07:31:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-12-19 07:31:59,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:59,219 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:31:59,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 07:31:59,429 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 [2023-12-19 07:31:59,429 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:59,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:59,430 INFO L85 PathProgramCache]: Analyzing trace with hash -63368507, now seen corresponding path program 1 times [2023-12-19 07:31:59,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:59,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289326473] [2023-12-19 07:31:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:59,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:59,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:59,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217006465] [2023-12-19 07:31:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:59,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:59,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:59,479 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) [2023-12-19 07:31:59,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 07:32:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:00,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:32:00,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:32:00,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289326473] [2023-12-19 07:32:00,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217006465] [2023-12-19 07:32:00,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217006465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:00,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:00,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:32:00,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912758000] [2023-12-19 07:32:00,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:32:00,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:32:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:00,703 INFO L87 Difference]: Start difference. First operand 118608 states and 177900 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:32:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:29,472 INFO L93 Difference]: Finished difference Result 298052 states and 446256 transitions. [2023-12-19 07:32:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:32:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 666 [2023-12-19 07:32:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:30,226 INFO L225 Difference]: With dead ends: 298052 [2023-12-19 07:32:30,226 INFO L226 Difference]: Without dead ends: 183651 [2023-12-19 07:32:30,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:32:30,420 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 251 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:30,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1270 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:32:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183651 states. [2023-12-19 07:32:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183651 to 183604. [2023-12-19 07:33:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183604 states, 134272 states have (on average 1.3878991897044806) internal successors, (186356), 135672 states have internal predecessors, (186356), 44101 states have call successors, (44101), 5230 states have call predecessors, (44101), 5230 states have return successors, (44101), 42701 states have call predecessors, (44101), 44101 states have call successors, (44101) [2023-12-19 07:33:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183604 states to 183604 states and 274558 transitions. [2023-12-19 07:33:00,922 INFO L78 Accepts]: Start accepts. Automaton has 183604 states and 274558 transitions. Word has length 666 [2023-12-19 07:33:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:00,923 INFO L495 AbstractCegarLoop]: Abstraction has 183604 states and 274558 transitions. [2023-12-19 07:33:00,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-19 07:33:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 183604 states and 274558 transitions. [2023-12-19 07:33:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-12-19 07:33:01,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:01,310 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:01,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:01,521 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 [2023-12-19 07:33:01,522 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:01,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash -254592701, now seen corresponding path program 1 times [2023-12-19 07:33:01,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:01,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080638716] [2023-12-19 07:33:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:01,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:01,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:01,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450221731] [2023-12-19 07:33:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:01,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:01,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:01,568 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) [2023-12-19 07:33:01,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 07:33:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:02,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:33:02,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-19 07:33:03,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:03,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080638716] [2023-12-19 07:33:03,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450221731] [2023-12-19 07:33:03,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450221731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:03,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:03,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:33:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841174500] [2023-12-19 07:33:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:33:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:33:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:33:03,422 INFO L87 Difference]: Start difference. First operand 183604 states and 274558 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101)