/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-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:28:48,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:28:48,471 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 07:28:48,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:28:48,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:28:48,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:28:48,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:28:48,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:28:48,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:28:48,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:28:48,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:28:48,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:28:48,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:28:48,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:28:48,520 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:28:48,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:28:48,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:28:48,521 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:28:48,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:28:48,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:28:48,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:28:48,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:28:48,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:28:48,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:28:48,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:28:48,523 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:28:48,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:28:48,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:28:48,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:28:48,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:28:48,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:28:48,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:28:48,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:28:48,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:28:48,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:28:48,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:28:48,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:28:48,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:28:48,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:28:48,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:28:48,527 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:28:48,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:28:48,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:28:48,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:28:48,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:28:48,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:28:48,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:28:48,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:28:48,821 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:28:48,822 INFO L431 ainManager$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-11.i [2023-12-19 07:28:50,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:28:50,352 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:28:50,353 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-11.i [2023-12-19 07:28:50,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b794a3787/de40f5c6d8034319959602c824312e30/FLAGfed4f1221 [2023-12-19 07:28:50,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b794a3787/de40f5c6d8034319959602c824312e30 [2023-12-19 07:28:50,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:28:50,390 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:28:50,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:28:50,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:28:50,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:28:50,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:28:50" (1/1) ... [2023-12-19 07:28:50,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771e9108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:50, skipping insertion in model container [2023-12-19 07:28:50,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:28:50" (1/1) ... [2023-12-19 07:28:50,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:28:50,629 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-11.i[916,929] [2023-12-19 07:28:50,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:28:50,856 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:28:50,875 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-11.i[916,929] [2023-12-19 07:28:50,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:28:51,003 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:28:51,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51 WrapperNode [2023-12-19 07:28:51,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:28:51,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:28:51,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:28:51,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:28:51,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,105 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 845 [2023-12-19 07:28:51,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:28:51,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:28:51,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:28:51,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:28:51,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,167 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 07:28:51,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:28:51,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:28:51,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:28:51,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:28:51,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (1/1) ... [2023-12-19 07:28:51,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:28:51,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:51,294 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 07:28:51,324 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 07:28:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:28:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:28:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:28:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:28:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:28:51,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:28:51,518 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:28:51,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:28:52,462 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:28:52,510 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:28:52,511 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:28:52,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:28:52 BoogieIcfgContainer [2023-12-19 07:28:52,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:28:52,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:28:52,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:28:52,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:28:52,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:28:50" (1/3) ... [2023-12-19 07:28:52,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661bef9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:28:52, skipping insertion in model container [2023-12-19 07:28:52,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:28:51" (2/3) ... [2023-12-19 07:28:52,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661bef9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:28:52, skipping insertion in model container [2023-12-19 07:28:52,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:28:52" (3/3) ... [2023-12-19 07:28:52,519 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-11.i [2023-12-19 07:28:52,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:28:52,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:28:52,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:28:52,621 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;@802273, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:28:52,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:28:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 221 states have (on average 1.6244343891402715) internal successors, (359), 222 states have internal predecessors, (359), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-19 07:28:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-19 07:28:52,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:52,681 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:52,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:52,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:52,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1162039328, now seen corresponding path program 1 times [2023-12-19 07:28:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775552871] [2023-12-19 07:28:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:53,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:28:53,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775552871] [2023-12-19 07:28:53,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:28:53,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385468221] [2023-12-19 07:28:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:53,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:53,216 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 07:28:53,254 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 07:28:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:53,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:28:53,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:28:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 26450 trivial. 0 not checked. [2023-12-19 07:28:53,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:28:53,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385468221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:28:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:28:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:28:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721845229] [2023-12-19 07:28:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:28:53,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:28:53,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:28:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:28:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:28:54,004 INFO L87 Difference]: Start difference. First operand has 340 states, 221 states have (on average 1.6244343891402715) internal successors, (359), 222 states have internal predecessors, (359), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-19 07:28:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:28:54,098 INFO L93 Difference]: Finished difference Result 677 states and 1296 transitions. [2023-12-19 07:28:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:28:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 2 states have call successors, (116) Word has length 722 [2023-12-19 07:28:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:28:54,115 INFO L225 Difference]: With dead ends: 677 [2023-12-19 07:28:54,115 INFO L226 Difference]: Without dead ends: 338 [2023-12-19 07:28:54,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 721 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 07:28:54,130 INFO L413 NwaCegarLoop]: 580 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, 580 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 07:28:54,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:28:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-19 07:28:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-12-19 07:28:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 220 states have (on average 1.5954545454545455) internal successors, (351), 220 states have internal predecessors, (351), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-19 07:28:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 583 transitions. [2023-12-19 07:28:54,242 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 583 transitions. Word has length 722 [2023-12-19 07:28:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:28:54,244 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 583 transitions. [2023-12-19 07:28:54,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-19 07:28:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 583 transitions. [2023-12-19 07:28:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-19 07:28:54,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:54,263 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:54,277 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 07:28:54,472 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 07:28:54,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:54,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1899840484, now seen corresponding path program 1 times [2023-12-19 07:28:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569867671] [2023-12-19 07:28:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:54,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:28:54,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907710621] [2023-12-19 07:28:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:54,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:54,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:54,730 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 07:28:54,752 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 07:28:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:55,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:28:55,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:28:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:28:55,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:28:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:28:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569867671] [2023-12-19 07:28:55,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:28:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907710621] [2023-12-19 07:28:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907710621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:28:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:28:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:28:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480027065] [2023-12-19 07:28:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:28:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:28:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:28:55,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:28:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:28:55,311 INFO L87 Difference]: Start difference. First operand 338 states and 583 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:28:55,521 INFO L93 Difference]: Finished difference Result 1041 states and 1790 transitions. [2023-12-19 07:28:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:28:55,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 722 [2023-12-19 07:28:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:28:55,530 INFO L225 Difference]: With dead ends: 1041 [2023-12-19 07:28:55,530 INFO L226 Difference]: Without dead ends: 704 [2023-12-19 07:28:55,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 720 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 07:28:55,533 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 1146 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:28:55,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 1999 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:28:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-19 07:28:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 515. [2023-12-19 07:28:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 379 states have (on average 1.6781002638522426) internal successors, (636), 380 states have internal predecessors, (636), 133 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2023-12-19 07:28:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 902 transitions. [2023-12-19 07:28:55,618 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 902 transitions. Word has length 722 [2023-12-19 07:28:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:28:55,620 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 902 transitions. [2023-12-19 07:28:55,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:55,621 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 902 transitions. [2023-12-19 07:28:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:28:55,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:55,630 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:55,652 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 07:28:55,840 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 07:28:55,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:55,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 936088040, now seen corresponding path program 1 times [2023-12-19 07:28:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290081234] [2023-12-19 07:28:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:55,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:28:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088164990] [2023-12-19 07:28:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:55,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:55,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:55,964 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 07:28:55,967 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 07:28:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:56,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:28:56,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:28:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:28:56,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:28:56,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:28:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290081234] [2023-12-19 07:28:56,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:28:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088164990] [2023-12-19 07:28:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088164990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:28:56,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:28:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:28:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96016156] [2023-12-19 07:28:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:28:56,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:28:56,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:28:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:28:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:28:56,504 INFO L87 Difference]: Start difference. First operand 515 states and 902 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:28:56,580 INFO L93 Difference]: Finished difference Result 1381 states and 2426 transitions. [2023-12-19 07:28:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:28:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 723 [2023-12-19 07:28:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:28:56,592 INFO L225 Difference]: With dead ends: 1381 [2023-12-19 07:28:56,592 INFO L226 Difference]: Without dead ends: 867 [2023-12-19 07:28:56,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 721 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 07:28:56,598 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 358 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:28:56,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1300 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:28:56,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-12-19 07:28:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 864. [2023-12-19 07:28:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 671 states have (on average 1.700447093889717) internal successors, (1141), 674 states have internal predecessors, (1141), 188 states have call successors, (188), 4 states have call predecessors, (188), 4 states have return successors, (188), 185 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-19 07:28:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1517 transitions. [2023-12-19 07:28:56,675 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1517 transitions. Word has length 723 [2023-12-19 07:28:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:28:56,677 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1517 transitions. [2023-12-19 07:28:56,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1517 transitions. [2023-12-19 07:28:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:28:56,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:56,685 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:56,701 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 07:28:56,898 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 07:28:56,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:56,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash -974954518, now seen corresponding path program 1 times [2023-12-19 07:28:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:56,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485961881] [2023-12-19 07:28:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:56,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:56,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:28:56,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161915186] [2023-12-19 07:28:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:56,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:56,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:56,976 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 07:28:56,979 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 07:28:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:57,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:28:57,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:28:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:28:57,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:28:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:28:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485961881] [2023-12-19 07:28:57,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:28:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161915186] [2023-12-19 07:28:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161915186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:28:57,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:28:57,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:28:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589074072] [2023-12-19 07:28:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:28:57,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:28:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:28:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:28:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:28:57,496 INFO L87 Difference]: Start difference. First operand 864 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:28:57,566 INFO L93 Difference]: Finished difference Result 1734 states and 3038 transitions. [2023-12-19 07:28:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:28:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 723 [2023-12-19 07:28:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:28:57,573 INFO L225 Difference]: With dead ends: 1734 [2023-12-19 07:28:57,574 INFO L226 Difference]: Without dead ends: 871 [2023-12-19 07:28:57,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 721 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 07:28:57,577 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 288 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:28:57,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1238 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:28:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-19 07:28:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 717. [2023-12-19 07:28:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 580 states have (on average 1.7413793103448276) internal successors, (1010), 581 states have internal predecessors, (1010), 133 states have call successors, (133), 3 states have call predecessors, (133), 3 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2023-12-19 07:28:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1276 transitions. [2023-12-19 07:28:57,651 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1276 transitions. Word has length 723 [2023-12-19 07:28:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:28:57,652 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1276 transitions. [2023-12-19 07:28:57,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1276 transitions. [2023-12-19 07:28:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:28:57,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:57,660 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:57,676 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 07:28:57,870 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 07:28:57,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:57,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1108968024, now seen corresponding path program 1 times [2023-12-19 07:28:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374354365] [2023-12-19 07:28:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:57,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:28:57,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57841357] [2023-12-19 07:28:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:57,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:57,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:57,963 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 07:28:58,025 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 07:28:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:58,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:28:58,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:28:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:28:58,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:28:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:28:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374354365] [2023-12-19 07:28:58,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:28:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57841357] [2023-12-19 07:28:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57841357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:28:58,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:28:58,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:28:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497754780] [2023-12-19 07:28:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:28:58,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:28:58,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:28:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:28:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:28:58,546 INFO L87 Difference]: Start difference. First operand 717 states and 1276 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:28:58,624 INFO L93 Difference]: Finished difference Result 1948 states and 3482 transitions. [2023-12-19 07:28:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:28:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 723 [2023-12-19 07:28:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:28:58,634 INFO L225 Difference]: With dead ends: 1948 [2023-12-19 07:28:58,634 INFO L226 Difference]: Without dead ends: 1232 [2023-12-19 07:28:58,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 721 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 07:28:58,638 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 334 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:28:58,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1276 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:28:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-19 07:28:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1229. [2023-12-19 07:28:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1042 states have (on average 1.7571976967370442) internal successors, (1831), 1045 states have internal predecessors, (1831), 181 states have call successors, (181), 5 states have call predecessors, (181), 5 states have return successors, (181), 178 states have call predecessors, (181), 181 states have call successors, (181) [2023-12-19 07:28:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2193 transitions. [2023-12-19 07:28:58,701 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2193 transitions. Word has length 723 [2023-12-19 07:28:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:28:58,702 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2193 transitions. [2023-12-19 07:28:58,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2193 transitions. [2023-12-19 07:28:58,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:28:58,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:58,711 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:58,726 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 07:28:58,924 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 07:28:58,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:58,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash -660312106, now seen corresponding path program 1 times [2023-12-19 07:28:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:58,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469537596] [2023-12-19 07:28:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:58,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:28:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117802247] [2023-12-19 07:28:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:58,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:58,997 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 07:28:59,000 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 07:28:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:28:59,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:28:59,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:28:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:28:59,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:28:59,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:28:59,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469537596] [2023-12-19 07:28:59,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:28:59,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117802247] [2023-12-19 07:28:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117802247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:28:59,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:28:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:28:59,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369465497] [2023-12-19 07:28:59,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:28:59,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:28:59,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:28:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:28:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:28:59,474 INFO L87 Difference]: Start difference. First operand 1229 states and 2193 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:28:59,575 INFO L93 Difference]: Finished difference Result 3082 states and 5443 transitions. [2023-12-19 07:28:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:28:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 723 [2023-12-19 07:28:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:28:59,586 INFO L225 Difference]: With dead ends: 3082 [2023-12-19 07:28:59,586 INFO L226 Difference]: Without dead ends: 1854 [2023-12-19 07:28:59,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 721 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 07:28:59,591 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 320 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:28:59,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1141 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:28:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2023-12-19 07:28:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1851. [2023-12-19 07:28:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1512 states have (on average 1.7096560846560847) internal successors, (2585), 1519 states have internal predecessors, (2585), 328 states have call successors, (328), 10 states have call predecessors, (328), 10 states have return successors, (328), 321 states have call predecessors, (328), 328 states have call successors, (328) [2023-12-19 07:28:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 3241 transitions. [2023-12-19 07:28:59,693 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 3241 transitions. Word has length 723 [2023-12-19 07:28:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:28:59,694 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 3241 transitions. [2023-12-19 07:28:59,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:28:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 3241 transitions. [2023-12-19 07:28:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:28:59,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:28:59,703 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:59,715 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 07:28:59,915 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 07:28:59,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:28:59,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:28:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1689671404, now seen corresponding path program 1 times [2023-12-19 07:28:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:28:59,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931994746] [2023-12-19 07:28:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:59,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:28:59,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:28:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192575767] [2023-12-19 07:28:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:28:59,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:28:59,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:28:59,993 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 07:28:59,996 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 07:29:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:00,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:00,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:29:02,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:02,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931994746] [2023-12-19 07:29:02,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192575767] [2023-12-19 07:29:02,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192575767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:02,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:02,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972649368] [2023-12-19 07:29:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:29:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:29:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:29:02,212 INFO L87 Difference]: Start difference. First operand 1851 states and 3241 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:02,766 INFO L93 Difference]: Finished difference Result 7381 states and 12925 transitions. [2023-12-19 07:29:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:29:02,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 723 [2023-12-19 07:29:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:02,799 INFO L225 Difference]: With dead ends: 7381 [2023-12-19 07:29:02,800 INFO L226 Difference]: Without dead ends: 5531 [2023-12-19 07:29:02,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:29:02,807 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1039 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:02,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1512 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:29:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2023-12-19 07:29:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5527. [2023-12-19 07:29:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 4512 states have (on average 1.6974734042553192) internal successors, (7659), 4533 states have internal predecessors, (7659), 984 states have call successors, (984), 30 states have call predecessors, (984), 30 states have return successors, (984), 963 states have call predecessors, (984), 984 states have call successors, (984) [2023-12-19 07:29:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 9627 transitions. [2023-12-19 07:29:03,150 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 9627 transitions. Word has length 723 [2023-12-19 07:29:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:03,151 INFO L495 AbstractCegarLoop]: Abstraction has 5527 states and 9627 transitions. [2023-12-19 07:29:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 9627 transitions. [2023-12-19 07:29:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:29:03,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:03,167 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:03,192 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 07:29:03,375 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 07:29:03,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:03,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash 555968532, now seen corresponding path program 1 times [2023-12-19 07:29:03,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:03,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126630276] [2023-12-19 07:29:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:03,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:03,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669307701] [2023-12-19 07:29:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:03,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:03,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:03,439 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 07:29:03,443 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 07:29:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:03,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:03,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 11895 proven. 231 refuted. 0 times theorem prover too weak. 14554 trivial. 0 not checked. [2023-12-19 07:29:04,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 114 proven. 231 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126630276] [2023-12-19 07:29:04,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669307701] [2023-12-19 07:29:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669307701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:04,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:04,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:04,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791332595] [2023-12-19 07:29:04,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:04,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:04,962 INFO L87 Difference]: Start difference. First operand 5527 states and 9627 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (193), 2 states have call predecessors, (193), 4 states have return successors, (194), 2 states have call predecessors, (194), 2 states have call successors, (194) [2023-12-19 07:29:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:05,764 INFO L93 Difference]: Finished difference Result 9669 states and 16615 transitions. [2023-12-19 07:29:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:29:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (193), 2 states have call predecessors, (193), 4 states have return successors, (194), 2 states have call predecessors, (194), 2 states have call successors, (194) Word has length 723 [2023-12-19 07:29:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:05,792 INFO L225 Difference]: With dead ends: 9669 [2023-12-19 07:29:05,793 INFO L226 Difference]: Without dead ends: 4143 [2023-12-19 07:29:05,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1438 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 07:29:05,811 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 632 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:05,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1112 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:29:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-19 07:29:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4075. [2023-12-19 07:29:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3054 states have (on average 1.617878192534381) internal successors, (4941), 3075 states have internal predecessors, (4941), 984 states have call successors, (984), 36 states have call predecessors, (984), 36 states have return successors, (984), 963 states have call predecessors, (984), 984 states have call successors, (984) [2023-12-19 07:29:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6909 transitions. [2023-12-19 07:29:06,239 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6909 transitions. Word has length 723 [2023-12-19 07:29:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:06,241 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6909 transitions. [2023-12-19 07:29:06,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (193), 2 states have call predecessors, (193), 4 states have return successors, (194), 2 states have call predecessors, (194), 2 states have call successors, (194) [2023-12-19 07:29:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6909 transitions. [2023-12-19 07:29:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-19 07:29:06,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:06,253 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:06,271 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 07:29:06,466 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 07:29:06,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:06,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1956441024, now seen corresponding path program 1 times [2023-12-19 07:29:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141362481] [2023-12-19 07:29:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:06,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:06,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:06,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364198053] [2023-12-19 07:29:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:06,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:06,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:06,536 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 07:29:06,558 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 07:29:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:06,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:06,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13455 proven. 171 refuted. 0 times theorem prover too weak. 13054 trivial. 0 not checked. [2023-12-19 07:29:07,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 174 proven. 171 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:07,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:07,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141362481] [2023-12-19 07:29:07,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:07,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364198053] [2023-12-19 07:29:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364198053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:07,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:07,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:29:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571175046] [2023-12-19 07:29:07,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:29:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:29:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:29:07,996 INFO L87 Difference]: Start difference. First operand 4075 states and 6909 transitions. Second operand has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 3 states have call successors, (173), 2 states have call predecessors, (173), 4 states have return successors, (174), 3 states have call predecessors, (174), 3 states have call successors, (174) [2023-12-19 07:29:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:08,890 INFO L93 Difference]: Finished difference Result 8233 states and 13895 transitions. [2023-12-19 07:29:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:29:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 3 states have call successors, (173), 2 states have call predecessors, (173), 4 states have return successors, (174), 3 states have call predecessors, (174), 3 states have call successors, (174) Word has length 726 [2023-12-19 07:29:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:08,914 INFO L225 Difference]: With dead ends: 8233 [2023-12-19 07:29:08,915 INFO L226 Difference]: Without dead ends: 4159 [2023-12-19 07:29:08,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1444 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 07:29:08,930 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 784 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:08,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1111 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:29:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4159 states. [2023-12-19 07:29:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4159 to 4099. [2023-12-19 07:29:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 3072 states have (on average 1.5947265625) internal successors, (4899), 3093 states have internal predecessors, (4899), 984 states have call successors, (984), 42 states have call predecessors, (984), 42 states have return successors, (984), 963 states have call predecessors, (984), 984 states have call successors, (984) [2023-12-19 07:29:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 6867 transitions. [2023-12-19 07:29:09,304 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 6867 transitions. Word has length 726 [2023-12-19 07:29:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:09,306 INFO L495 AbstractCegarLoop]: Abstraction has 4099 states and 6867 transitions. [2023-12-19 07:29:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 3 states have call successors, (173), 2 states have call predecessors, (173), 4 states have return successors, (174), 3 states have call predecessors, (174), 3 states have call successors, (174) [2023-12-19 07:29:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 6867 transitions. [2023-12-19 07:29:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-12-19 07:29:09,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:09,318 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:09,331 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 07:29:09,530 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 07:29:09,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:09,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash -50845529, now seen corresponding path program 1 times [2023-12-19 07:29:09,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:09,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803227530] [2023-12-19 07:29:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:09,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:09,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919194084] [2023-12-19 07:29:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:09,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:09,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:09,599 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 07:29:09,624 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 07:29:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:10,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:10,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 11103 proven. 99 refuted. 0 times theorem prover too weak. 15478 trivial. 0 not checked. [2023-12-19 07:29:10,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 246 proven. 99 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803227530] [2023-12-19 07:29:10,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919194084] [2023-12-19 07:29:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919194084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:10,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:10,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800327787] [2023-12-19 07:29:10,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:10,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:10,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:10,773 INFO L87 Difference]: Start difference. First operand 4099 states and 6867 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-12-19 07:29:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:11,993 INFO L93 Difference]: Finished difference Result 6884 states and 11573 transitions. [2023-12-19 07:29:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:29:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) Word has length 727 [2023-12-19 07:29:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:12,010 INFO L225 Difference]: With dead ends: 6884 [2023-12-19 07:29:12,010 INFO L226 Difference]: Without dead ends: 2786 [2023-12-19 07:29:12,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1456 GetRequests, 1446 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:29:12,024 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 650 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:12,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1440 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 07:29:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-12-19 07:29:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2751. [2023-12-19 07:29:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2097 states have (on average 1.614687649022413) internal successors, (3386), 2107 states have internal predecessors, (3386), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 615 states have call predecessors, (625), 625 states have call successors, (625) [2023-12-19 07:29:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4636 transitions. [2023-12-19 07:29:12,268 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4636 transitions. Word has length 727 [2023-12-19 07:29:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:12,269 INFO L495 AbstractCegarLoop]: Abstraction has 2751 states and 4636 transitions. [2023-12-19 07:29:12,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-12-19 07:29:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4636 transitions. [2023-12-19 07:29:12,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:29:12,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:12,279 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:12,290 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 07:29:12,490 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 07:29:12,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:12,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1299655773, now seen corresponding path program 1 times [2023-12-19 07:29:12,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:12,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029832089] [2023-12-19 07:29:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:12,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778169224] [2023-12-19 07:29:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:12,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:12,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:12,561 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 07:29:12,587 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 07:29:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:12,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:29:12,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:29:13,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029832089] [2023-12-19 07:29:13,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778169224] [2023-12-19 07:29:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778169224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:13,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:13,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:29:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502932044] [2023-12-19 07:29:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:13,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:29:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:29:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:29:13,048 INFO L87 Difference]: Start difference. First operand 2751 states and 4636 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:13,253 INFO L93 Difference]: Finished difference Result 6227 states and 10534 transitions. [2023-12-19 07:29:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:29:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 728 [2023-12-19 07:29:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:13,290 INFO L225 Difference]: With dead ends: 6227 [2023-12-19 07:29:13,291 INFO L226 Difference]: Without dead ends: 4489 [2023-12-19 07:29:13,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 07:29:13,299 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 561 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1451 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 07:29:13,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1451 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2023-12-19 07:29:13,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4487. [2023-12-19 07:29:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 3455 states have (on average 1.6214182344428365) internal successors, (5602), 3471 states have internal predecessors, (5602), 987 states have call successors, (987), 44 states have call predecessors, (987), 44 states have return successors, (987), 971 states have call predecessors, (987), 987 states have call successors, (987) [2023-12-19 07:29:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 7576 transitions. [2023-12-19 07:29:13,669 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 7576 transitions. Word has length 728 [2023-12-19 07:29:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:13,670 INFO L495 AbstractCegarLoop]: Abstraction has 4487 states and 7576 transitions. [2023-12-19 07:29:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 7576 transitions. [2023-12-19 07:29:13,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:29:13,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:13,681 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:13,696 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 07:29:13,893 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 07:29:13,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:13,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash 807029599, now seen corresponding path program 1 times [2023-12-19 07:29:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358157063] [2023-12-19 07:29:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:13,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:13,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093204221] [2023-12-19 07:29:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:13,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:13,960 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 07:29:13,983 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 07:29:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:14,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:29:14,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:29:14,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:14,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:14,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358157063] [2023-12-19 07:29:14,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:14,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093204221] [2023-12-19 07:29:14,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093204221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:14,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:14,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:29:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719982213] [2023-12-19 07:29:14,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:14,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:29:14,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:14,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:29:14,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:29:14,581 INFO L87 Difference]: Start difference. First operand 4487 states and 7576 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:16,796 INFO L93 Difference]: Finished difference Result 20975 states and 34262 transitions. [2023-12-19 07:29:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:29:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 728 [2023-12-19 07:29:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:16,872 INFO L225 Difference]: With dead ends: 20975 [2023-12-19 07:29:16,872 INFO L226 Difference]: Without dead ends: 16635 [2023-12-19 07:29:16,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:16,896 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1881 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:16,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 3237 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 07:29:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16635 states. [2023-12-19 07:29:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16635 to 7172. [2023-12-19 07:29:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7172 states, 5355 states have (on average 1.5335200746965454) internal successors, (8212), 5391 states have internal predecessors, (8212), 1732 states have call successors, (1732), 84 states have call predecessors, (1732), 84 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7172 states to 7172 states and 11676 transitions. [2023-12-19 07:29:18,048 INFO L78 Accepts]: Start accepts. Automaton has 7172 states and 11676 transitions. Word has length 728 [2023-12-19 07:29:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:18,049 INFO L495 AbstractCegarLoop]: Abstraction has 7172 states and 11676 transitions. [2023-12-19 07:29:18,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7172 states and 11676 transitions. [2023-12-19 07:29:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:29:18,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:18,067 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:18,084 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 07:29:18,280 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 07:29:18,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:18,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -10618851, now seen corresponding path program 1 times [2023-12-19 07:29:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:18,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581651019] [2023-12-19 07:29:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:18,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:18,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726542050] [2023-12-19 07:29:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:18,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:18,352 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 07:29:18,376 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 07:29:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:18,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:18,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 10699 proven. 93 refuted. 0 times theorem prover too weak. 15888 trivial. 0 not checked. [2023-12-19 07:29:19,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 252 proven. 93 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:19,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:19,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581651019] [2023-12-19 07:29:19,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:19,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726542050] [2023-12-19 07:29:19,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726542050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:19,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:19,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067615269] [2023-12-19 07:29:19,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:19,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:19,469 INFO L87 Difference]: Start difference. First operand 7172 states and 11676 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-19 07:29:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:20,602 INFO L93 Difference]: Finished difference Result 14321 states and 23246 transitions. [2023-12-19 07:29:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:29:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 728 [2023-12-19 07:29:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:20,630 INFO L225 Difference]: With dead ends: 14321 [2023-12-19 07:29:20,630 INFO L226 Difference]: Without dead ends: 7036 [2023-12-19 07:29:20,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1448 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 07:29:20,656 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 864 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:20,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1104 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:29:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2023-12-19 07:29:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 6932. [2023-12-19 07:29:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6932 states, 5110 states have (on average 1.527788649706458) internal successors, (7807), 5146 states have internal predecessors, (7807), 1732 states have call successors, (1732), 89 states have call predecessors, (1732), 89 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6932 states to 6932 states and 11271 transitions. [2023-12-19 07:29:21,506 INFO L78 Accepts]: Start accepts. Automaton has 6932 states and 11271 transitions. Word has length 728 [2023-12-19 07:29:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:21,507 INFO L495 AbstractCegarLoop]: Abstraction has 6932 states and 11271 transitions. [2023-12-19 07:29:21,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-19 07:29:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6932 states and 11271 transitions. [2023-12-19 07:29:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:29:21,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:21,523 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:21,537 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 07:29:21,734 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 07:29:21,735 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:21,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -36975903, now seen corresponding path program 1 times [2023-12-19 07:29:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:21,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949628121] [2023-12-19 07:29:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:21,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:21,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586024612] [2023-12-19 07:29:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:21,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:21,796 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 07:29:21,829 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 07:29:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:22,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:29:22,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:29:22,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:22,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:22,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949628121] [2023-12-19 07:29:22,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:22,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586024612] [2023-12-19 07:29:22,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586024612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:29:22,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216824013] [2023-12-19 07:29:22,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:22,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:29:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:29:22,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:29:22,314 INFO L87 Difference]: Start difference. First operand 6932 states and 11271 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:23,073 INFO L93 Difference]: Finished difference Result 20382 states and 33123 transitions. [2023-12-19 07:29:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:29:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 728 [2023-12-19 07:29:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:23,135 INFO L225 Difference]: With dead ends: 20382 [2023-12-19 07:29:23,135 INFO L226 Difference]: Without dead ends: 13597 [2023-12-19 07:29:23,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 725 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 07:29:23,160 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 563 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:23,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 2800 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:29:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13597 states. [2023-12-19 07:29:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13597 to 7092. [2023-12-19 07:29:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 5270 states have (on average 1.5269449715370018) internal successors, (8047), 5306 states have internal predecessors, (8047), 1732 states have call successors, (1732), 89 states have call predecessors, (1732), 89 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 11511 transitions. [2023-12-19 07:29:24,157 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 11511 transitions. Word has length 728 [2023-12-19 07:29:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:24,159 INFO L495 AbstractCegarLoop]: Abstraction has 7092 states and 11511 transitions. [2023-12-19 07:29:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 11511 transitions. [2023-12-19 07:29:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-19 07:29:24,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:24,172 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:24,187 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 07:29:24,384 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 07:29:24,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:24,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash -36916321, now seen corresponding path program 1 times [2023-12-19 07:29:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573780385] [2023-12-19 07:29:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:24,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137024602] [2023-12-19 07:29:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:24,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:24,454 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 07:29:24,475 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 07:29:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:24,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:29:24,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:29:24,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573780385] [2023-12-19 07:29:24,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137024602] [2023-12-19 07:29:24,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137024602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:24,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:24,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:29:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61430704] [2023-12-19 07:29:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:24,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:29:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:29:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:29:24,983 INFO L87 Difference]: Start difference. First operand 7092 states and 11511 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:26,227 INFO L93 Difference]: Finished difference Result 16493 states and 26535 transitions. [2023-12-19 07:29:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:29:26,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 728 [2023-12-19 07:29:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:26,262 INFO L225 Difference]: With dead ends: 16493 [2023-12-19 07:29:26,262 INFO L226 Difference]: Without dead ends: 9288 [2023-12-19 07:29:26,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:29:26,279 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1130 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:26,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 3232 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:29:26,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2023-12-19 07:29:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 7312. [2023-12-19 07:29:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7312 states, 5490 states have (on average 1.527686703096539) internal successors, (8387), 5526 states have internal predecessors, (8387), 1732 states have call successors, (1732), 89 states have call predecessors, (1732), 89 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 11851 transitions. [2023-12-19 07:29:27,187 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 11851 transitions. Word has length 728 [2023-12-19 07:29:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:27,188 INFO L495 AbstractCegarLoop]: Abstraction has 7312 states and 11851 transitions. [2023-12-19 07:29:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 11851 transitions. [2023-12-19 07:29:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:29:27,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:27,203 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:27,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:27,414 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 07:29:27,415 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:27,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1472491155, now seen corresponding path program 1 times [2023-12-19 07:29:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297891062] [2023-12-19 07:29:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:27,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:27,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670822271] [2023-12-19 07:29:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:27,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:27,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:27,478 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 07:29:27,502 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 07:29:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:27,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:27,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 12333 proven. 222 refuted. 0 times theorem prover too weak. 14125 trivial. 0 not checked. [2023-12-19 07:29:28,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 123 proven. 222 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:28,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297891062] [2023-12-19 07:29:28,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670822271] [2023-12-19 07:29:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670822271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:28,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:28,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:28,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077920968] [2023-12-19 07:29:28,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:28,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:28,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:28,890 INFO L87 Difference]: Start difference. First operand 7312 states and 11851 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) [2023-12-19 07:29:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:29,870 INFO L93 Difference]: Finished difference Result 14647 states and 23636 transitions. [2023-12-19 07:29:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:29:29,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) Word has length 729 [2023-12-19 07:29:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:29,896 INFO L225 Difference]: With dead ends: 14647 [2023-12-19 07:29:29,896 INFO L226 Difference]: Without dead ends: 7482 [2023-12-19 07:29:29,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1450 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 07:29:29,911 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 328 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:29,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1090 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:29:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2023-12-19 07:29:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 7356. [2023-12-19 07:29:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7356 states, 5523 states have (on average 1.5064276661234837) internal successors, (8320), 5559 states have internal predecessors, (8320), 1732 states have call successors, (1732), 100 states have call predecessors, (1732), 100 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 11784 transitions. [2023-12-19 07:29:30,679 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 11784 transitions. Word has length 729 [2023-12-19 07:29:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:30,680 INFO L495 AbstractCegarLoop]: Abstraction has 7356 states and 11784 transitions. [2023-12-19 07:29:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) [2023-12-19 07:29:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 11784 transitions. [2023-12-19 07:29:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:29:30,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:30,692 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:30,704 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 07:29:30,903 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 07:29:30,903 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:30,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -288822220, now seen corresponding path program 1 times [2023-12-19 07:29:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286948205] [2023-12-19 07:29:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:30,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089130826] [2023-12-19 07:29:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:30,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:30,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:30,975 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 07:29:30,991 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 07:29:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:31,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:31,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13035 proven. 141 refuted. 0 times theorem prover too weak. 13504 trivial. 0 not checked. [2023-12-19 07:29:31,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 204 proven. 141 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:32,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286948205] [2023-12-19 07:29:32,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089130826] [2023-12-19 07:29:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089130826] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:32,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229915128] [2023-12-19 07:29:32,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:32,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:32,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:32,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:32,099 INFO L87 Difference]: Start difference. First operand 7356 states and 11784 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) [2023-12-19 07:29:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:33,049 INFO L93 Difference]: Finished difference Result 14753 states and 23521 transitions. [2023-12-19 07:29:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:29:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) Word has length 730 [2023-12-19 07:29:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:33,079 INFO L225 Difference]: With dead ends: 14753 [2023-12-19 07:29:33,080 INFO L226 Difference]: Without dead ends: 7548 [2023-12-19 07:29:33,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1452 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 07:29:33,101 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 623 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:33,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1092 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:29:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7548 states. [2023-12-19 07:29:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7548 to 7400. [2023-12-19 07:29:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7400 states, 5556 states have (on average 1.499820014398848) internal successors, (8333), 5592 states have internal predecessors, (8333), 1732 states have call successors, (1732), 111 states have call predecessors, (1732), 111 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7400 states to 7400 states and 11797 transitions. [2023-12-19 07:29:33,835 INFO L78 Accepts]: Start accepts. Automaton has 7400 states and 11797 transitions. Word has length 730 [2023-12-19 07:29:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:33,836 INFO L495 AbstractCegarLoop]: Abstraction has 7400 states and 11797 transitions. [2023-12-19 07:29:33,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) [2023-12-19 07:29:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7400 states and 11797 transitions. [2023-12-19 07:29:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:29:33,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:33,848 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:33,858 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 07:29:34,056 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 07:29:34,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:34,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash 155078454, now seen corresponding path program 1 times [2023-12-19 07:29:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243302194] [2023-12-19 07:29:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:34,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855628763] [2023-12-19 07:29:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:34,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:34,111 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 07:29:34,134 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 07:29:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:34,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:29:34,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 13299 proven. 153 refuted. 0 times theorem prover too weak. 13228 trivial. 0 not checked. [2023-12-19 07:29:34,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 192 proven. 153 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:35,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:35,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243302194] [2023-12-19 07:29:35,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:35,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855628763] [2023-12-19 07:29:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855628763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:35,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:35,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:29:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665644993] [2023-12-19 07:29:35,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:29:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:29:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:29:35,292 INFO L87 Difference]: Start difference. First operand 7400 states and 11797 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) [2023-12-19 07:29:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:36,381 INFO L93 Difference]: Finished difference Result 14859 states and 23566 transitions. [2023-12-19 07:29:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:29:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) Word has length 730 [2023-12-19 07:29:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:36,432 INFO L225 Difference]: With dead ends: 14859 [2023-12-19 07:29:36,432 INFO L226 Difference]: Without dead ends: 7614 [2023-12-19 07:29:36,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1452 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 07:29:36,484 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 581 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:36,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1083 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:29:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7614 states. [2023-12-19 07:29:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7614 to 7444. [2023-12-19 07:29:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 5589 states have (on average 1.4718196457326893) internal successors, (8226), 5625 states have internal predecessors, (8226), 1732 states have call successors, (1732), 122 states have call predecessors, (1732), 122 states have return successors, (1732), 1696 states have call predecessors, (1732), 1732 states have call successors, (1732) [2023-12-19 07:29:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 11690 transitions. [2023-12-19 07:29:37,730 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 11690 transitions. Word has length 730 [2023-12-19 07:29:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:37,731 INFO L495 AbstractCegarLoop]: Abstraction has 7444 states and 11690 transitions. [2023-12-19 07:29:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) [2023-12-19 07:29:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 11690 transitions. [2023-12-19 07:29:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:29:37,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:37,746 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:37,759 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 07:29:37,959 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 07:29:37,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:37,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash -611066180, now seen corresponding path program 1 times [2023-12-19 07:29:37,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:37,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008911984] [2023-12-19 07:29:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:37,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:38,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017446570] [2023-12-19 07:29:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:38,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:38,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:38,035 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 07:29:38,063 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 07:29:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:38,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:29:38,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 1465 proven. 336 refuted. 0 times theorem prover too weak. 24879 trivial. 0 not checked. [2023-12-19 07:29:40,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 9 proven. 336 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:41,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:41,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008911984] [2023-12-19 07:29:41,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:41,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017446570] [2023-12-19 07:29:41,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017446570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:41,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:41,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:29:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489566024] [2023-12-19 07:29:41,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:41,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:29:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:41,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:29:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:29:41,550 INFO L87 Difference]: Start difference. First operand 7444 states and 11690 transitions. Second operand has 12 states, 12 states have (on average 22.25) internal successors, (267), 12 states have internal predecessors, (267), 4 states have call successors, (232), 3 states have call predecessors, (232), 5 states have return successors, (232), 4 states have call predecessors, (232), 4 states have call successors, (232) [2023-12-19 07:29:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:44,783 INFO L93 Difference]: Finished difference Result 28017 states and 43419 transitions. [2023-12-19 07:29:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 07:29:44,784 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.25) internal successors, (267), 12 states have internal predecessors, (267), 4 states have call successors, (232), 3 states have call predecessors, (232), 5 states have return successors, (232), 4 states have call predecessors, (232), 4 states have call successors, (232) Word has length 730 [2023-12-19 07:29:44,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:44,834 INFO L225 Difference]: With dead ends: 28017 [2023-12-19 07:29:44,835 INFO L226 Difference]: Without dead ends: 20732 [2023-12-19 07:29:44,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2023-12-19 07:29:44,858 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 5096 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 1799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5102 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1799 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:44,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5102 Valid, 3015 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1799 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 07:29:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20732 states. [2023-12-19 07:29:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20732 to 11284. [2023-12-19 07:29:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 8848 states have (on average 1.467111211573237) internal successors, (12981), 8932 states have internal predecessors, (12981), 2208 states have call successors, (2208), 227 states have call predecessors, (2208), 227 states have return successors, (2208), 2124 states have call predecessors, (2208), 2208 states have call successors, (2208) [2023-12-19 07:29:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 17397 transitions. [2023-12-19 07:29:45,957 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 17397 transitions. Word has length 730 [2023-12-19 07:29:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:45,958 INFO L495 AbstractCegarLoop]: Abstraction has 11284 states and 17397 transitions. [2023-12-19 07:29:45,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.25) internal successors, (267), 12 states have internal predecessors, (267), 4 states have call successors, (232), 3 states have call predecessors, (232), 5 states have return successors, (232), 4 states have call predecessors, (232), 4 states have call successors, (232) [2023-12-19 07:29:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 17397 transitions. [2023-12-19 07:29:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:29:45,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:45,968 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:45,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:29:46,169 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 07:29:46,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:46,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1714671382, now seen corresponding path program 1 times [2023-12-19 07:29:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095581406] [2023-12-19 07:29:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:46,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847397837] [2023-12-19 07:29:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:46,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:46,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:46,233 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 07:29:46,237 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 07:29:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:46,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 07:29:46,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 14205 proven. 333 refuted. 0 times theorem prover too weak. 12142 trivial. 0 not checked. [2023-12-19 07:29:47,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 351 proven. 336 refuted. 0 times theorem prover too weak. 25993 trivial. 0 not checked. [2023-12-19 07:29:48,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:48,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095581406] [2023-12-19 07:29:48,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:48,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847397837] [2023-12-19 07:29:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847397837] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:48,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:48,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 07:29:48,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262289348] [2023-12-19 07:29:48,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 07:29:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 07:29:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:29:48,882 INFO L87 Difference]: Start difference. First operand 11284 states and 17397 transitions. Second operand has 16 states, 15 states have (on average 18.266666666666666) internal successors, (274), 16 states have internal predecessors, (274), 7 states have call successors, (209), 4 states have call predecessors, (209), 7 states have return successors, (210), 5 states have call predecessors, (210), 7 states have call successors, (210) [2023-12-19 07:29:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:50,471 INFO L93 Difference]: Finished difference Result 22121 states and 33827 transitions. [2023-12-19 07:29:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 07:29:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 18.266666666666666) internal successors, (274), 16 states have internal predecessors, (274), 7 states have call successors, (209), 4 states have call predecessors, (209), 7 states have return successors, (210), 5 states have call predecessors, (210), 7 states have call successors, (210) Word has length 731 [2023-12-19 07:29:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:50,496 INFO L225 Difference]: With dead ends: 22121 [2023-12-19 07:29:50,497 INFO L226 Difference]: Without dead ends: 11000 [2023-12-19 07:29:50,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1446 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:29:50,523 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1397 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:50,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 1084 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:29:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2023-12-19 07:29:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 10356. [2023-12-19 07:29:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10356 states, 7968 states have (on average 1.466741967871486) internal successors, (11687), 8052 states have internal predecessors, (11687), 2108 states have call successors, (2108), 279 states have call predecessors, (2108), 279 states have return successors, (2108), 2024 states have call predecessors, (2108), 2108 states have call successors, (2108) [2023-12-19 07:29:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10356 states to 10356 states and 15903 transitions. [2023-12-19 07:29:51,523 INFO L78 Accepts]: Start accepts. Automaton has 10356 states and 15903 transitions. Word has length 731 [2023-12-19 07:29:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:51,524 INFO L495 AbstractCegarLoop]: Abstraction has 10356 states and 15903 transitions. [2023-12-19 07:29:51,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 18.266666666666666) internal successors, (274), 16 states have internal predecessors, (274), 7 states have call successors, (209), 4 states have call predecessors, (209), 7 states have return successors, (210), 5 states have call predecessors, (210), 7 states have call successors, (210) [2023-12-19 07:29:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 10356 states and 15903 transitions. [2023-12-19 07:29:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:29:51,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:51,535 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:51,544 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 07:29:51,735 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 07:29:51,736 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:51,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1920764392, now seen corresponding path program 1 times [2023-12-19 07:29:51,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:51,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992596145] [2023-12-19 07:29:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:51,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149998338] [2023-12-19 07:29:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:51,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:51,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:51,803 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 07:29:51,826 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 07:29:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:52,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:29:52,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:29:52,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:29:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992596145] [2023-12-19 07:29:52,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:52,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149998338] [2023-12-19 07:29:52,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149998338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:29:52,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:29:52,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:29:52,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293707263] [2023-12-19 07:29:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:29:52,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:29:52,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:52,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:29:52,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:29:52,959 INFO L87 Difference]: Start difference. First operand 10356 states and 15903 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:29:55,038 INFO L93 Difference]: Finished difference Result 34030 states and 53182 transitions. [2023-12-19 07:29:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:29:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 731 [2023-12-19 07:29:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:29:55,112 INFO L225 Difference]: With dead ends: 34030 [2023-12-19 07:29:55,112 INFO L226 Difference]: Without dead ends: 23845 [2023-12-19 07:29:55,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:29:55,136 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1772 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:29:55,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 3084 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:29:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23845 states. [2023-12-19 07:29:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23845 to 19280. [2023-12-19 07:29:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19280 states, 14696 states have (on average 1.4365133369624388) internal successors, (21111), 14868 states have internal predecessors, (21111), 4034 states have call successors, (4034), 549 states have call predecessors, (4034), 549 states have return successors, (4034), 3862 states have call predecessors, (4034), 4034 states have call successors, (4034) [2023-12-19 07:29:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19280 states to 19280 states and 29179 transitions. [2023-12-19 07:29:57,029 INFO L78 Accepts]: Start accepts. Automaton has 19280 states and 29179 transitions. Word has length 731 [2023-12-19 07:29:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:29:57,030 INFO L495 AbstractCegarLoop]: Abstraction has 19280 states and 29179 transitions. [2023-12-19 07:29:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:29:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 19280 states and 29179 transitions. [2023-12-19 07:29:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:29:57,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:29:57,042 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:57,052 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 07:29:57,243 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 07:29:57,243 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:29:57,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:29:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2061313002, now seen corresponding path program 1 times [2023-12-19 07:29:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:29:57,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369957969] [2023-12-19 07:29:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:57,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:29:57,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:29:57,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224876410] [2023-12-19 07:29:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:29:57,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:29:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:29:57,294 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 07:29:57,307 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 07:29:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:29:57,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:29:57,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:29:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 1245 proven. 6 refuted. 0 times theorem prover too weak. 25429 trivial. 0 not checked. [2023-12-19 07:29:57,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:29:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 339 proven. 6 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-12-19 07:29:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:29:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369957969] [2023-12-19 07:29:58,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:29:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224876410] [2023-12-19 07:29:58,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224876410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:29:58,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:29:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 07:29:58,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090524286] [2023-12-19 07:29:58,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:29:58,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:29:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:29:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:29:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:29:58,253 INFO L87 Difference]: Start difference. First operand 19280 states and 29179 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-19 07:30:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:02,065 INFO L93 Difference]: Finished difference Result 52449 states and 79328 transitions. [2023-12-19 07:30:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 07:30:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 731 [2023-12-19 07:30:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:02,288 INFO L225 Difference]: With dead ends: 52449 [2023-12-19 07:30:02,289 INFO L226 Difference]: Without dead ends: 33344 [2023-12-19 07:30:02,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1472 GetRequests, 1453 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 07:30:02,320 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1382 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:02,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 2502 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 07:30:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33344 states. [2023-12-19 07:30:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33344 to 29536. [2023-12-19 07:30:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29536 states, 22630 states have (on average 1.4414494034467522) internal successors, (32620), 22885 states have internal predecessors, (32620), 6074 states have call successors, (6074), 831 states have call predecessors, (6074), 831 states have return successors, (6074), 5819 states have call predecessors, (6074), 6074 states have call successors, (6074) [2023-12-19 07:30:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29536 states to 29536 states and 44768 transitions. [2023-12-19 07:30:05,227 INFO L78 Accepts]: Start accepts. Automaton has 29536 states and 44768 transitions. Word has length 731 [2023-12-19 07:30:05,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:05,228 INFO L495 AbstractCegarLoop]: Abstraction has 29536 states and 44768 transitions. [2023-12-19 07:30:05,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-19 07:30:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29536 states and 44768 transitions. [2023-12-19 07:30:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:30:05,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:05,240 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:05,249 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 07:30:05,440 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 07:30:05,441 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:05,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 544710552, now seen corresponding path program 1 times [2023-12-19 07:30:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:05,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256120834] [2023-12-19 07:30:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:05,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:05,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283177603] [2023-12-19 07:30:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:05,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:05,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:05,498 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 07:30:05,525 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 07:30:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:06,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 07:30:06,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 19581 proven. 576 refuted. 0 times theorem prover too weak. 6523 trivial. 0 not checked. [2023-12-19 07:30:07,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:30:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 441 proven. 585 refuted. 0 times theorem prover too weak. 25654 trivial. 0 not checked. [2023-12-19 07:30:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256120834] [2023-12-19 07:30:08,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283177603] [2023-12-19 07:30:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283177603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:30:08,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:30:08,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-19 07:30:08,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496953966] [2023-12-19 07:30:08,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:30:08,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 07:30:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 07:30:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-19 07:30:08,955 INFO L87 Difference]: Start difference. First operand 29536 states and 44768 transitions. Second operand has 22 states, 22 states have (on average 12.818181818181818) internal successors, (282), 22 states have internal predecessors, (282), 7 states have call successors, (209), 4 states have call predecessors, (209), 10 states have return successors, (210), 7 states have call predecessors, (210), 7 states have call successors, (210) [2023-12-19 07:30:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:18,881 INFO L93 Difference]: Finished difference Result 105402 states and 155514 transitions. [2023-12-19 07:30:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-19 07:30:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.818181818181818) internal successors, (282), 22 states have internal predecessors, (282), 7 states have call successors, (209), 4 states have call predecessors, (209), 10 states have return successors, (210), 7 states have call predecessors, (210), 7 states have call successors, (210) Word has length 731 [2023-12-19 07:30:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:30:19,061 INFO L225 Difference]: With dead ends: 105402 [2023-12-19 07:30:19,061 INFO L226 Difference]: Without dead ends: 76074 [2023-12-19 07:30:19,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1442 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=840, Invalid=2130, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 07:30:19,120 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2558 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:30:19,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 2198 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 07:30:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76074 states. [2023-12-19 07:30:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76074 to 72566. [2023-12-19 07:30:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72566 states, 55483 states have (on average 1.396229475695258) internal successors, (77467), 56266 states have internal predecessors, (77467), 14930 states have call successors, (14930), 2152 states have call predecessors, (14930), 2152 states have return successors, (14930), 14147 states have call predecessors, (14930), 14930 states have call successors, (14930) [2023-12-19 07:30:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72566 states to 72566 states and 107327 transitions. [2023-12-19 07:30:28,079 INFO L78 Accepts]: Start accepts. Automaton has 72566 states and 107327 transitions. Word has length 731 [2023-12-19 07:30:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:30:28,080 INFO L495 AbstractCegarLoop]: Abstraction has 72566 states and 107327 transitions. [2023-12-19 07:30:28,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.818181818181818) internal successors, (282), 22 states have internal predecessors, (282), 7 states have call successors, (209), 4 states have call predecessors, (209), 10 states have return successors, (210), 7 states have call predecessors, (210), 7 states have call successors, (210) [2023-12-19 07:30:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 72566 states and 107327 transitions. [2023-12-19 07:30:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:30:28,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:30:28,108 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:28,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 07:30:28,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:28,322 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:30:28,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:30:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -484648746, now seen corresponding path program 1 times [2023-12-19 07:30:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:30:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001100640] [2023-12-19 07:30:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:28,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:30:28,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:30:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502550714] [2023-12-19 07:30:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:30:28,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:30:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:30:28,385 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:30:28,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 07:30:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:30:28,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:30:28,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:30:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:30:29,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:30:29,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:30:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001100640] [2023-12-19 07:30:29,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:30:29,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502550714] [2023-12-19 07:30:29,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502550714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:30:29,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:30:29,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:30:29,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428512610] [2023-12-19 07:30:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:30:29,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:30:29,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:30:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:30:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:30:29,558 INFO L87 Difference]: Start difference. First operand 72566 states and 107327 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:30:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:30:59,288 INFO L93 Difference]: Finished difference Result 363314 states and 537826 transitions. [2023-12-19 07:30:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:30:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 731 [2023-12-19 07:30:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:00,385 INFO L225 Difference]: With dead ends: 363314 [2023-12-19 07:31:00,385 INFO L226 Difference]: Without dead ends: 290964 [2023-12-19 07:31:00,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:31:00,579 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1486 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:00,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 2630 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 07:31:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290964 states. [2023-12-19 07:31:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290964 to 193504. [2023-12-19 07:31:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193504 states, 147701 states have (on average 1.3938226552291453) internal successors, (205869), 149784 states have internal predecessors, (205869), 40020 states have call successors, (40020), 5782 states have call predecessors, (40020), 5782 states have return successors, (40020), 37937 states have call predecessors, (40020), 40020 states have call successors, (40020) [2023-12-19 07:31:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193504 states to 193504 states and 285909 transitions. [2023-12-19 07:31:27,033 INFO L78 Accepts]: Start accepts. Automaton has 193504 states and 285909 transitions. Word has length 731 [2023-12-19 07:31:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:27,034 INFO L495 AbstractCegarLoop]: Abstraction has 193504 states and 285909 transitions. [2023-12-19 07:31:27,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-12-19 07:31:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 193504 states and 285909 transitions. [2023-12-19 07:31:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:31:27,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:27,096 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:27,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 07:31:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:27,309 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:27,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1938907496, now seen corresponding path program 1 times [2023-12-19 07:31:27,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:27,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698808338] [2023-12-19 07:31:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:27,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203286558] [2023-12-19 07:31:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:27,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:27,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:27,376 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:31:27,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 07:31:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:27,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 07:31:27,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-12-19 07:31:29,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698808338] [2023-12-19 07:31:29,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203286558] [2023-12-19 07:31:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203286558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:31:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411508748] [2023-12-19 07:31:29,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:31:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:31:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:31:29,591 INFO L87 Difference]: Start difference. First operand 193504 states and 285909 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116)