/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:21:47,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:21:47,477 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 20:21:47,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:21:47,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:21:47,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:21:47,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:21:47,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:21:47,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:21:47,515 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:21:47,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:21:47,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:21:47,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:21:47,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:21:47,527 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:21:47,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:21:47,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:21:47,528 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:21:47,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:21:47,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:21:47,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:21:47,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:21:47,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:21:47,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:21:47,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:21:47,530 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:21:47,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:21:47,531 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:21:47,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:21:47,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:21:47,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:21:47,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:21:47,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:21:47,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:21:47,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:21:47,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:21:47,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:21:47,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:21:47,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:21:47,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:21:47,534 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:21:47,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:21:47,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:21:47,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:21:47,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:21:47,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:21:47,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:21:47,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:21:47,788 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:21:47,789 INFO L431 ainManager$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-96.i [2023-12-20 20:21:49,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:21:49,276 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:21:49,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-20 20:21:49,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aaaf8848/a85b79d13f0f4af99a8330457f4b1c38/FLAG17bb22960 [2023-12-20 20:21:49,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aaaf8848/a85b79d13f0f4af99a8330457f4b1c38 [2023-12-20 20:21:49,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:21:49,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:21:49,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:21:49,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:21:49,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:21:49,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:49,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd3a347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49, skipping insertion in model container [2023-12-20 20:21:49,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:49,382 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:21:49,510 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-96.i[916,929] [2023-12-20 20:21:49,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:21:49,722 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:21:49,732 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-96.i[916,929] [2023-12-20 20:21:49,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:21:49,852 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:21:49,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49 WrapperNode [2023-12-20 20:21:49,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:21:49,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:21:49,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:21:49,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:21:49,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:49,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:49,977 INFO L138 Inliner]: procedures = 26, calls = 132, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 782 [2023-12-20 20:21:49,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:21:49,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:21:49,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:21:49,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:21:49,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:49,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,106 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]. [2023-12-20 20:21:50,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:21:50,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:21:50,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:21:50,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:21:50,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (1/1) ... [2023-12-20 20:21:50,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:21:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:50,235 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) [2023-12-20 20:21:50,249 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 [2023-12-20 20:21:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:21:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:21:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:21:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:21:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:21:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:21:50,420 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:21:50,422 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:21:51,271 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:21:51,318 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:21:51,319 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:21:51,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:21:51 BoogieIcfgContainer [2023-12-20 20:21:51,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:21:51,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:21:51,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:21:51,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:21:51,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:21:49" (1/3) ... [2023-12-20 20:21:51,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d56d2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:21:51, skipping insertion in model container [2023-12-20 20:21:51,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:21:49" (2/3) ... [2023-12-20 20:21:51,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d56d2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:21:51, skipping insertion in model container [2023-12-20 20:21:51,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:21:51" (3/3) ... [2023-12-20 20:21:51,327 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-20 20:21:51,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:21:51,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:21:51,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:21:51,392 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;@86312e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:21:51,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:21:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 200 states have (on average 1.57) internal successors, (314), 201 states have internal predecessors, (314), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-20 20:21:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 20:21:51,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:51,465 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:51,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:51,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1855827818, now seen corresponding path program 1 times [2023-12-20 20:21:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:51,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418419843] [2023-12-20 20:21:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:51,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418419843] [2023-12-20 20:21:51,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:21:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661381806] [2023-12-20 20:21:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:51,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:51,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:51,898 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) [2023-12-20 20:21:51,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 20:21:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:52,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:21:52,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 27848 trivial. 0 not checked. [2023-12-20 20:21:52,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:52,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661381806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:52,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:52,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:21:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955462061] [2023-12-20 20:21:52,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:52,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:21:52,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:21:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:21:52,531 INFO L87 Difference]: Start difference. First operand has 322 states, 200 states have (on average 1.57) internal successors, (314), 201 states have internal predecessors, (314), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-20 20:21:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:52,636 INFO L93 Difference]: Finished difference Result 638 states and 1215 transitions. [2023-12-20 20:21:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:21:52,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) Word has length 747 [2023-12-20 20:21:52,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:52,663 INFO L225 Difference]: With dead ends: 638 [2023-12-20 20:21:52,664 INFO L226 Difference]: Without dead ends: 317 [2023-12-20 20:21:52,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:21:52,676 INFO L413 NwaCegarLoop]: 534 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, 534 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 [2023-12-20 20:21:52,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 534 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-20 20:21:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2023-12-20 20:21:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 196 states have (on average 1.5255102040816326) internal successors, (299), 196 states have internal predecessors, (299), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-20 20:21:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 537 transitions. [2023-12-20 20:21:52,772 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 537 transitions. Word has length 747 [2023-12-20 20:21:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:52,779 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 537 transitions. [2023-12-20 20:21:52,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-20 20:21:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 537 transitions. [2023-12-20 20:21:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 20:21:52,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:52,805 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:52,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:53,012 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 [2023-12-20 20:21:53,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:53,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1290445492, now seen corresponding path program 1 times [2023-12-20 20:21:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:53,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688626397] [2023-12-20 20:21:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:53,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404088146] [2023-12-20 20:21:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:53,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:53,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:53,197 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) [2023-12-20 20:21:53,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 20:21:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:53,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:53,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:21:53,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688626397] [2023-12-20 20:21:53,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404088146] [2023-12-20 20:21:53,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404088146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:53,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:53,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:53,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559058937] [2023-12-20 20:21:53,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:53,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:53,771 INFO L87 Difference]: Start difference. First operand 317 states and 537 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:53,874 INFO L93 Difference]: Finished difference Result 811 states and 1381 transitions. [2023-12-20 20:21:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:53,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 747 [2023-12-20 20:21:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:53,887 INFO L225 Difference]: With dead ends: 811 [2023-12-20 20:21:53,888 INFO L226 Difference]: Without dead ends: 495 [2023-12-20 20:21:53,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:53,894 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 239 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:53,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1037 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-20 20:21:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2023-12-20 20:21:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 336 states have (on average 1.5773809523809523) internal successors, (530), 337 states have internal predecessors, (530), 153 states have call successors, (153), 2 states have call predecessors, (153), 2 states have return successors, (153), 152 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-20 20:21:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 836 transitions. [2023-12-20 20:21:53,957 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 836 transitions. Word has length 747 [2023-12-20 20:21:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 836 transitions. [2023-12-20 20:21:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 836 transitions. [2023-12-20 20:21:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 20:21:53,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:53,968 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:53,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:54,177 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 [2023-12-20 20:21:54,177 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:54,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash 488231856, now seen corresponding path program 1 times [2023-12-20 20:21:54,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:54,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711487714] [2023-12-20 20:21:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:54,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:54,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187868272] [2023-12-20 20:21:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:54,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:54,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:54,310 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) [2023-12-20 20:21:54,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 20:21:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:54,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:54,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:21:54,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711487714] [2023-12-20 20:21:54,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187868272] [2023-12-20 20:21:54,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187868272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:54,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967508171] [2023-12-20 20:21:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:54,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:54,849 INFO L87 Difference]: Start difference. First operand 492 states and 836 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:54,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:54,923 INFO L93 Difference]: Finished difference Result 1319 states and 2241 transitions. [2023-12-20 20:21:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 747 [2023-12-20 20:21:54,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:54,931 INFO L225 Difference]: With dead ends: 1319 [2023-12-20 20:21:54,931 INFO L226 Difference]: Without dead ends: 828 [2023-12-20 20:21:54,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:54,934 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 251 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:54,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1037 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-20 20:21:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 825. [2023-12-20 20:21:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 586 states have (on average 1.5887372013651877) internal successors, (931), 589 states have internal predecessors, (931), 234 states have call successors, (234), 4 states have call predecessors, (234), 4 states have return successors, (234), 231 states have call predecessors, (234), 234 states have call successors, (234) [2023-12-20 20:21:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1399 transitions. [2023-12-20 20:21:54,997 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1399 transitions. Word has length 747 [2023-12-20 20:21:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:54,999 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1399 transitions. [2023-12-20 20:21:54,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1399 transitions. [2023-12-20 20:21:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 20:21:55,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:55,009 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:55,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 20:21:55,217 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 [2023-12-20 20:21:55,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:55,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1200711886, now seen corresponding path program 1 times [2023-12-20 20:21:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:55,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512073175] [2023-12-20 20:21:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:55,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:55,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616099782] [2023-12-20 20:21:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:55,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:55,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:55,296 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) [2023-12-20 20:21:55,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 20:21:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:55,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:55,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:21:55,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512073175] [2023-12-20 20:21:55,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616099782] [2023-12-20 20:21:55,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616099782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:55,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:55,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341653235] [2023-12-20 20:21:55,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:55,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:55,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:55,725 INFO L87 Difference]: Start difference. First operand 825 states and 1399 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:55,872 INFO L93 Difference]: Finished difference Result 2465 states and 4179 transitions. [2023-12-20 20:21:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:55,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 747 [2023-12-20 20:21:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:55,881 INFO L225 Difference]: With dead ends: 2465 [2023-12-20 20:21:55,882 INFO L226 Difference]: Without dead ends: 1641 [2023-12-20 20:21:55,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:55,885 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 520 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:55,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1037 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-20 20:21:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1637. [2023-12-20 20:21:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1160 states have (on average 1.5620689655172413) internal successors, (1812), 1166 states have internal predecessors, (1812), 468 states have call successors, (468), 8 states have call predecessors, (468), 8 states have return successors, (468), 462 states have call predecessors, (468), 468 states have call successors, (468) [2023-12-20 20:21:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2748 transitions. [2023-12-20 20:21:56,025 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2748 transitions. Word has length 747 [2023-12-20 20:21:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:56,027 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 2748 transitions. [2023-12-20 20:21:56,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2748 transitions. [2023-12-20 20:21:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 20:21:56,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:56,035 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:56,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 20:21:56,244 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 [2023-12-20 20:21:56,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:56,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -698797700, now seen corresponding path program 1 times [2023-12-20 20:21:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483734688] [2023-12-20 20:21:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:56,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675066919] [2023-12-20 20:21:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:56,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:56,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:56,335 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) [2023-12-20 20:21:56,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 20:21:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:56,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:21:56,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:21:56,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:21:56,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483734688] [2023-12-20 20:21:56,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675066919] [2023-12-20 20:21:56,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675066919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:21:56,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:21:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:21:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94994102] [2023-12-20 20:21:56,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:21:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:21:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:21:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:56,771 INFO L87 Difference]: Start difference. First operand 1637 states and 2748 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:56,952 INFO L93 Difference]: Finished difference Result 4909 states and 8242 transitions. [2023-12-20 20:21:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:21:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 748 [2023-12-20 20:21:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:56,969 INFO L225 Difference]: With dead ends: 4909 [2023-12-20 20:21:56,969 INFO L226 Difference]: Without dead ends: 3273 [2023-12-20 20:21:56,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:21:56,974 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 512 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:56,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1522 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:21:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2023-12-20 20:21:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3271. [2023-12-20 20:21:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2318 states have (on average 1.5522001725625538) internal successors, (3598), 2330 states have internal predecessors, (3598), 936 states have call successors, (936), 16 states have call predecessors, (936), 16 states have return successors, (936), 924 states have call predecessors, (936), 936 states have call successors, (936) [2023-12-20 20:21:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 5470 transitions. [2023-12-20 20:21:57,249 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 5470 transitions. Word has length 748 [2023-12-20 20:21:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:21:57,250 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 5470 transitions. [2023-12-20 20:21:57,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:21:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 5470 transitions. [2023-12-20 20:21:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 20:21:57,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:21:57,258 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:21:57,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 20:21:57,471 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 [2023-12-20 20:21:57,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:21:57,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:21:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 312319550, now seen corresponding path program 1 times [2023-12-20 20:21:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:21:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267070589] [2023-12-20 20:21:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:21:57,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:21:57,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254170718] [2023-12-20 20:21:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:21:57,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:21:57,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:21:57,536 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) [2023-12-20 20:21:57,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 20:21:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:21:57,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:21:58,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:21:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13560 proven. 213 refuted. 0 times theorem prover too weak. 14311 trivial. 0 not checked. [2023-12-20 20:21:58,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:21:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 141 proven. 213 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-20 20:21:58,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:21:58,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267070589] [2023-12-20 20:21:58,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:21:58,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254170718] [2023-12-20 20:21:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254170718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:21:58,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:21:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:21:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272177765] [2023-12-20 20:21:58,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:21:58,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:21:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:21:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:21:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:21:58,978 INFO L87 Difference]: Start difference. First operand 3271 states and 5470 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2023-12-20 20:21:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:21:59,872 INFO L93 Difference]: Finished difference Result 5317 states and 8872 transitions. [2023-12-20 20:21:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:21:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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 748 [2023-12-20 20:21:59,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:21:59,884 INFO L225 Difference]: With dead ends: 5317 [2023-12-20 20:21:59,884 INFO L226 Difference]: Without dead ends: 2047 [2023-12-20 20:21:59,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1498 GetRequests, 1488 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:21:59,894 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 521 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 20:21:59,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1048 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 20:21:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2023-12-20 20:22:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2026. [2023-12-20 20:22:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1352 states have (on average 1.5) internal successors, (2028), 1357 states have internal predecessors, (2028), 659 states have call successors, (659), 14 states have call predecessors, (659), 14 states have return successors, (659), 654 states have call predecessors, (659), 659 states have call successors, (659) [2023-12-20 20:22:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 3346 transitions. [2023-12-20 20:22:00,167 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 3346 transitions. Word has length 748 [2023-12-20 20:22:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:00,168 INFO L495 AbstractCegarLoop]: Abstraction has 2026 states and 3346 transitions. [2023-12-20 20:22:00,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2023-12-20 20:22:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 3346 transitions. [2023-12-20 20:22:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 20:22:00,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:00,178 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:00,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:00,386 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 [2023-12-20 20:22:00,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:00,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -660263920, now seen corresponding path program 1 times [2023-12-20 20:22:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813014819] [2023-12-20 20:22:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:00,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:00,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876811921] [2023-12-20 20:22:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:00,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:00,458 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) [2023-12-20 20:22:00,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 20:22:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:00,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 20:22:00,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:22:00,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813014819] [2023-12-20 20:22:00,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876811921] [2023-12-20 20:22:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876811921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:00,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:00,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 20:22:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675999582] [2023-12-20 20:22:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:22:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:22:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:22:00,999 INFO L87 Difference]: Start difference. First operand 2026 states and 3346 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:02,044 INFO L93 Difference]: Finished difference Result 7243 states and 11871 transitions. [2023-12-20 20:22:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 20:22:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 749 [2023-12-20 20:22:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:02,071 INFO L225 Difference]: With dead ends: 7243 [2023-12-20 20:22:02,072 INFO L226 Difference]: Without dead ends: 5297 [2023-12-20 20:22:02,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:02,081 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1094 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:02,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1905 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 20:22:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2023-12-20 20:22:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 4120. [2023-12-20 20:22:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 2872 states have (on average 1.5048746518105849) internal successors, (4322), 2889 states have internal predecessors, (4322), 1207 states have call successors, (1207), 40 states have call predecessors, (1207), 40 states have return successors, (1207), 1190 states have call predecessors, (1207), 1207 states have call successors, (1207) [2023-12-20 20:22:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 6736 transitions. [2023-12-20 20:22:02,579 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 6736 transitions. Word has length 749 [2023-12-20 20:22:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:02,580 INFO L495 AbstractCegarLoop]: Abstraction has 4120 states and 6736 transitions. [2023-12-20 20:22:02,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 6736 transitions. [2023-12-20 20:22:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 20:22:02,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:02,589 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:02,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:02,797 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 [2023-12-20 20:22:02,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:02,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1037716240, now seen corresponding path program 1 times [2023-12-20 20:22:02,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:02,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374378694] [2023-12-20 20:22:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:02,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617198611] [2023-12-20 20:22:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:02,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:02,875 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) [2023-12-20 20:22:02,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 20:22:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:03,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:22:03,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13740 proven. 207 refuted. 0 times theorem prover too weak. 14137 trivial. 0 not checked. [2023-12-20 20:22:03,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 147 proven. 207 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-20 20:22:04,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:04,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374378694] [2023-12-20 20:22:04,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:04,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617198611] [2023-12-20 20:22:04,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617198611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:04,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:04,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:22:04,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441289736] [2023-12-20 20:22:04,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:04,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:22:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:22:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:22:04,208 INFO L87 Difference]: Start difference. First operand 4120 states and 6736 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-20 20:22:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:05,032 INFO L93 Difference]: Finished difference Result 8210 states and 13354 transitions. [2023-12-20 20:22:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:22:05,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 749 [2023-12-20 20:22:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:05,054 INFO L225 Difference]: With dead ends: 8210 [2023-12-20 20:22:05,055 INFO L226 Difference]: Without dead ends: 4184 [2023-12-20 20:22:05,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1490 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:22:05,068 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 515 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:05,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 924 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 20:22:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2023-12-20 20:22:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 4132. [2023-12-20 20:22:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 2871 states have (on average 1.4764890282131662) internal successors, (4239), 2888 states have internal predecessors, (4239), 1207 states have call successors, (1207), 53 states have call predecessors, (1207), 53 states have return successors, (1207), 1190 states have call predecessors, (1207), 1207 states have call successors, (1207) [2023-12-20 20:22:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 6653 transitions. [2023-12-20 20:22:05,543 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 6653 transitions. Word has length 749 [2023-12-20 20:22:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:05,544 INFO L495 AbstractCegarLoop]: Abstraction has 4132 states and 6653 transitions. [2023-12-20 20:22:05,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-20 20:22:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 6653 transitions. [2023-12-20 20:22:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 20:22:05,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:05,555 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:05,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:05,764 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 [2023-12-20 20:22:05,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:05,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -814113856, now seen corresponding path program 1 times [2023-12-20 20:22:05,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:05,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957386619] [2023-12-20 20:22:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:05,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432079238] [2023-12-20 20:22:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:05,836 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) [2023-12-20 20:22:05,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 20:22:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:06,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 20:22:06,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 18552 proven. 135 refuted. 0 times theorem prover too weak. 9397 trivial. 0 not checked. [2023-12-20 20:22:07,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 219 proven. 135 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-20 20:22:07,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:07,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957386619] [2023-12-20 20:22:07,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:07,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432079238] [2023-12-20 20:22:07,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432079238] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:07,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:07,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-20 20:22:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636792582] [2023-12-20 20:22:07,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:07,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 20:22:07,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 20:22:07,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 20:22:07,798 INFO L87 Difference]: Start difference. First operand 4132 states and 6653 transitions. Second operand has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 5 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 5 states have call predecessors, (194), 5 states have call successors, (194) [2023-12-20 20:22:08,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:08,662 INFO L93 Difference]: Finished difference Result 8234 states and 13226 transitions. [2023-12-20 20:22:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:22:08,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 5 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 5 states have call predecessors, (194), 5 states have call successors, (194) Word has length 750 [2023-12-20 20:22:08,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:08,693 INFO L225 Difference]: With dead ends: 8234 [2023-12-20 20:22:08,694 INFO L226 Difference]: Without dead ends: 4200 [2023-12-20 20:22:08,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-20 20:22:08,710 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 493 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:08,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 903 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 20:22:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2023-12-20 20:22:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 4148. [2023-12-20 20:22:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 2883 states have (on average 1.467568505029483) internal successors, (4231), 2900 states have internal predecessors, (4231), 1207 states have call successors, (1207), 57 states have call predecessors, (1207), 57 states have return successors, (1207), 1190 states have call predecessors, (1207), 1207 states have call successors, (1207) [2023-12-20 20:22:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6645 transitions. [2023-12-20 20:22:09,179 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6645 transitions. Word has length 750 [2023-12-20 20:22:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:09,180 INFO L495 AbstractCegarLoop]: Abstraction has 4148 states and 6645 transitions. [2023-12-20 20:22:09,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 5 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 5 states have call predecessors, (194), 5 states have call successors, (194) [2023-12-20 20:22:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6645 transitions. [2023-12-20 20:22:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-20 20:22:09,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:09,189 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:09,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:09,397 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 [2023-12-20 20:22:09,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:09,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash -332017269, now seen corresponding path program 1 times [2023-12-20 20:22:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:09,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611247672] [2023-12-20 20:22:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:09,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15762888] [2023-12-20 20:22:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:09,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:09,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:09,473 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) [2023-12-20 20:22:09,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 20:22:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:09,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 20:22:09,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 7286 proven. 324 refuted. 0 times theorem prover too weak. 20474 trivial. 0 not checked. [2023-12-20 20:22:11,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 30 proven. 324 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-20 20:22:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611247672] [2023-12-20 20:22:12,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15762888] [2023-12-20 20:22:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15762888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:12,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-20 20:22:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988223047] [2023-12-20 20:22:12,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 20:22:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:12,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 20:22:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-20 20:22:12,305 INFO L87 Difference]: Start difference. First operand 4148 states and 6645 transitions. Second operand has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 5 states have call successors, (227), 3 states have call predecessors, (227), 5 states have return successors, (228), 5 states have call predecessors, (228), 5 states have call successors, (228) [2023-12-20 20:22:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:14,239 INFO L93 Difference]: Finished difference Result 12596 states and 19933 transitions. [2023-12-20 20:22:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 20:22:14,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 5 states have call successors, (227), 3 states have call predecessors, (227), 5 states have return successors, (228), 5 states have call predecessors, (228), 5 states have call successors, (228) Word has length 751 [2023-12-20 20:22:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:14,274 INFO L225 Difference]: With dead ends: 12596 [2023-12-20 20:22:14,274 INFO L226 Difference]: Without dead ends: 8546 [2023-12-20 20:22:14,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1491 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2023-12-20 20:22:14,290 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 1135 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:14,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 2133 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 20:22:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8546 states. [2023-12-20 20:22:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8546 to 6456. [2023-12-20 20:22:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6456 states, 3921 states have (on average 1.3488905891354246) internal successors, (5289), 3958 states have internal predecessors, (5289), 2363 states have call successors, (2363), 171 states have call predecessors, (2363), 171 states have return successors, (2363), 2326 states have call predecessors, (2363), 2363 states have call successors, (2363) [2023-12-20 20:22:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 10015 transitions. [2023-12-20 20:22:15,378 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 10015 transitions. Word has length 751 [2023-12-20 20:22:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:15,379 INFO L495 AbstractCegarLoop]: Abstraction has 6456 states and 10015 transitions. [2023-12-20 20:22:15,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 5 states have call successors, (227), 3 states have call predecessors, (227), 5 states have return successors, (228), 5 states have call predecessors, (228), 5 states have call successors, (228) [2023-12-20 20:22:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 10015 transitions. [2023-12-20 20:22:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-20 20:22:15,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:15,388 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:15,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:15,597 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 [2023-12-20 20:22:15,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:15,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash -331957687, now seen corresponding path program 1 times [2023-12-20 20:22:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691689063] [2023-12-20 20:22:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:15,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:15,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793434888] [2023-12-20 20:22:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:15,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:15,650 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) [2023-12-20 20:22:15,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 20:22:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:16,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 20:22:16,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:22:16,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:16,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691689063] [2023-12-20 20:22:16,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793434888] [2023-12-20 20:22:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793434888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:16,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:16,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:22:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811914114] [2023-12-20 20:22:16,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:16,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:22:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:16,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:22:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:16,706 INFO L87 Difference]: Start difference. First operand 6456 states and 10015 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:17,373 INFO L93 Difference]: Finished difference Result 15982 states and 24828 transitions. [2023-12-20 20:22:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:22:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-20 20:22:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:17,405 INFO L225 Difference]: With dead ends: 15982 [2023-12-20 20:22:17,405 INFO L226 Difference]: Without dead ends: 9632 [2023-12-20 20:22:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:17,426 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 152 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:17,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1022 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:22:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2023-12-20 20:22:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9630. [2023-12-20 20:22:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9630 states, 5857 states have (on average 1.3477889704626942) internal successors, (7894), 5912 states have internal predecessors, (7894), 3519 states have call successors, (3519), 253 states have call predecessors, (3519), 253 states have return successors, (3519), 3464 states have call predecessors, (3519), 3519 states have call successors, (3519) [2023-12-20 20:22:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9630 states to 9630 states and 14932 transitions. [2023-12-20 20:22:18,921 INFO L78 Accepts]: Start accepts. Automaton has 9630 states and 14932 transitions. Word has length 751 [2023-12-20 20:22:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:18,922 INFO L495 AbstractCegarLoop]: Abstraction has 9630 states and 14932 transitions. [2023-12-20 20:22:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9630 states and 14932 transitions. [2023-12-20 20:22:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-20 20:22:18,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:18,931 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:18,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:19,139 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 [2023-12-20 20:22:19,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:19,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash 900908361, now seen corresponding path program 1 times [2023-12-20 20:22:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021261422] [2023-12-20 20:22:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:19,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:19,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201920392] [2023-12-20 20:22:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:19,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:19,193 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) [2023-12-20 20:22:19,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 20:22:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:19,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 20:22:19,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 6150 proven. 42 refuted. 0 times theorem prover too weak. 21892 trivial. 0 not checked. [2023-12-20 20:22:20,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:22:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 312 proven. 42 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-20 20:22:21,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:21,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021261422] [2023-12-20 20:22:21,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:21,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201920392] [2023-12-20 20:22:21,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201920392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:22:21,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:22:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-20 20:22:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491032343] [2023-12-20 20:22:21,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:22:21,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 20:22:21,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 20:22:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-20 20:22:21,129 INFO L87 Difference]: Start difference. First operand 9630 states and 14932 transitions. Second operand has 12 states, 12 states have (on average 25.583333333333332) internal successors, (307), 12 states have internal predecessors, (307), 4 states have call successors, (238), 3 states have call predecessors, (238), 5 states have return successors, (238), 4 states have call predecessors, (238), 4 states have call successors, (238) [2023-12-20 20:22:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:27,538 INFO L93 Difference]: Finished difference Result 48074 states and 73921 transitions. [2023-12-20 20:22:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 20:22:27,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.583333333333332) internal successors, (307), 12 states have internal predecessors, (307), 4 states have call successors, (238), 3 states have call predecessors, (238), 5 states have return successors, (238), 4 states have call predecessors, (238), 4 states have call successors, (238) Word has length 751 [2023-12-20 20:22:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:27,691 INFO L225 Difference]: With dead ends: 48074 [2023-12-20 20:22:27,691 INFO L226 Difference]: Without dead ends: 38550 [2023-12-20 20:22:27,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1495 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=426, Invalid=1134, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 20:22:27,729 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 4290 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 2543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4500 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 5069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2543 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:27,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4500 Valid, 3491 Invalid, 5069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2543 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 20:22:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38550 states. [2023-12-20 20:22:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38550 to 19676. [2023-12-20 20:22:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19676 states, 11183 states have (on average 1.2851649825628186) internal successors, (14372), 11318 states have internal predecessors, (14372), 7895 states have call successors, (7895), 597 states have call predecessors, (7895), 597 states have return successors, (7895), 7760 states have call predecessors, (7895), 7895 states have call successors, (7895) [2023-12-20 20:22:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19676 states to 19676 states and 30162 transitions. [2023-12-20 20:22:31,754 INFO L78 Accepts]: Start accepts. Automaton has 19676 states and 30162 transitions. Word has length 751 [2023-12-20 20:22:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:31,755 INFO L495 AbstractCegarLoop]: Abstraction has 19676 states and 30162 transitions. [2023-12-20 20:22:31,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.583333333333332) internal successors, (307), 12 states have internal predecessors, (307), 4 states have call successors, (238), 3 states have call predecessors, (238), 5 states have return successors, (238), 4 states have call predecessors, (238), 4 states have call successors, (238) [2023-12-20 20:22:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 19676 states and 30162 transitions. [2023-12-20 20:22:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-20 20:22:31,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:31,768 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:31,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:31,976 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 [2023-12-20 20:22:31,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:31,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 83259911, now seen corresponding path program 1 times [2023-12-20 20:22:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:31,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245703034] [2023-12-20 20:22:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:32,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:32,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025908174] [2023-12-20 20:22:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:32,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:32,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:32,038 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) [2023-12-20 20:22:32,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 20:22:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:32,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 20:22:32,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:22:32,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245703034] [2023-12-20 20:22:32,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025908174] [2023-12-20 20:22:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025908174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:32,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:32,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:22:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441681268] [2023-12-20 20:22:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:32,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:22:32,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:22:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:32,594 INFO L87 Difference]: Start difference. First operand 19676 states and 30162 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:36,076 INFO L93 Difference]: Finished difference Result 58816 states and 90186 transitions. [2023-12-20 20:22:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:22:36,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-20 20:22:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:36,310 INFO L225 Difference]: With dead ends: 58816 [2023-12-20 20:22:36,310 INFO L226 Difference]: Without dead ends: 39246 [2023-12-20 20:22:36,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:36,372 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 482 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:36,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1459 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:22:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39246 states. [2023-12-20 20:22:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39246 to 39244. [2023-12-20 20:22:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39244 states, 22317 states have (on average 1.2826544786485639) internal successors, (28625), 22586 states have internal predecessors, (28625), 15739 states have call successors, (15739), 1187 states have call predecessors, (15739), 1187 states have return successors, (15739), 15470 states have call predecessors, (15739), 15739 states have call successors, (15739) [2023-12-20 20:22:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39244 states to 39244 states and 60103 transitions. [2023-12-20 20:22:41,266 INFO L78 Accepts]: Start accepts. Automaton has 39244 states and 60103 transitions. Word has length 751 [2023-12-20 20:22:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:41,267 INFO L495 AbstractCegarLoop]: Abstraction has 39244 states and 60103 transitions. [2023-12-20 20:22:41,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 39244 states and 60103 transitions. [2023-12-20 20:22:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-20 20:22:41,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:41,280 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:41,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 20:22:41,489 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 [2023-12-20 20:22:41,490 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:41,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -269828471, now seen corresponding path program 1 times [2023-12-20 20:22:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237402449] [2023-12-20 20:22:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:41,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:41,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624373716] [2023-12-20 20:22:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:41,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:41,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:41,545 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) [2023-12-20 20:22:41,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 20:22:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:42,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 20:22:42,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:22:42,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237402449] [2023-12-20 20:22:42,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624373716] [2023-12-20 20:22:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624373716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:42,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:42,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:22:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848446754] [2023-12-20 20:22:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:42,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:22:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:22:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:42,665 INFO L87 Difference]: Start difference. First operand 39244 states and 60103 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:46,455 INFO L93 Difference]: Finished difference Result 78384 states and 120057 transitions. [2023-12-20 20:22:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:22:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-20 20:22:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:46,590 INFO L225 Difference]: With dead ends: 78384 [2023-12-20 20:22:46,590 INFO L226 Difference]: Without dead ends: 39246 [2023-12-20 20:22:46,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:22:46,701 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 132 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:46,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1129 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:22:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39246 states. [2023-12-20 20:22:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39246 to 19676. [2023-12-20 20:22:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19676 states, 11183 states have (on average 1.278905481534472) internal successors, (14302), 11318 states have internal predecessors, (14302), 7895 states have call successors, (7895), 597 states have call predecessors, (7895), 597 states have return successors, (7895), 7760 states have call predecessors, (7895), 7895 states have call successors, (7895) [2023-12-20 20:22:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19676 states to 19676 states and 30092 transitions. [2023-12-20 20:22:50,392 INFO L78 Accepts]: Start accepts. Automaton has 19676 states and 30092 transitions. Word has length 751 [2023-12-20 20:22:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:22:50,393 INFO L495 AbstractCegarLoop]: Abstraction has 19676 states and 30092 transitions. [2023-12-20 20:22:50,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19676 states and 30092 transitions. [2023-12-20 20:22:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-20 20:22:50,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:22:50,403 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:22:50,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-20 20:22:50,614 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 [2023-12-20 20:22:50,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:22:50,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:22:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1152280265, now seen corresponding path program 1 times [2023-12-20 20:22:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:22:50,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408113600] [2023-12-20 20:22:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:50,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:22:50,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:22:50,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728584578] [2023-12-20 20:22:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:22:50,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:22:50,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:22:50,675 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) [2023-12-20 20:22:50,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 20:22:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:22:51,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 20:22:51,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:22:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:22:51,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:22:51,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:22:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408113600] [2023-12-20 20:22:51,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:22:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728584578] [2023-12-20 20:22:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728584578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:22:51,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:22:51,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:22:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195664076] [2023-12-20 20:22:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:22:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:22:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:22:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:22:51,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:22:51,849 INFO L87 Difference]: Start difference. First operand 19676 states and 30092 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:22:59,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:22:59,500 INFO L93 Difference]: Finished difference Result 89548 states and 136565 transitions. [2023-12-20 20:22:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 20:22:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-20 20:22:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:22:59,747 INFO L225 Difference]: With dead ends: 89548 [2023-12-20 20:22:59,748 INFO L226 Difference]: Without dead ends: 69978 [2023-12-20 20:22:59,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 20:22:59,829 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 805 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 20:22:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1823 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 20:22:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69978 states. [2023-12-20 20:23:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69978 to 68908. [2023-12-20 20:23:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68908 states, 40108 states have (on average 1.2896678966789668) internal successors, (51726), 40657 states have internal predecessors, (51726), 26687 states have call successors, (26687), 2112 states have call predecessors, (26687), 2112 states have return successors, (26687), 26138 states have call predecessors, (26687), 26687 states have call successors, (26687) [2023-12-20 20:23:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68908 states to 68908 states and 105100 transitions. [2023-12-20 20:23:08,890 INFO L78 Accepts]: Start accepts. Automaton has 68908 states and 105100 transitions. Word has length 752 [2023-12-20 20:23:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:23:08,891 INFO L495 AbstractCegarLoop]: Abstraction has 68908 states and 105100 transitions. [2023-12-20 20:23:08,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:23:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 68908 states and 105100 transitions. [2023-12-20 20:23:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-20 20:23:08,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:23:08,905 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:23:08,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 20:23:09,106 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 [2023-12-20 20:23:09,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:23:09,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:23:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash -327505979, now seen corresponding path program 1 times [2023-12-20 20:23:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:23:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979835899] [2023-12-20 20:23:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:23:09,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:23:09,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907122158] [2023-12-20 20:23:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:09,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:23:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:23:09,162 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) [2023-12-20 20:23:09,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 20:23:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:23:09,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 20:23:09,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:23:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:23:10,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:23:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:23:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979835899] [2023-12-20 20:23:10,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:23:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907122158] [2023-12-20 20:23:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907122158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:23:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:23:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:23:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927898355] [2023-12-20 20:23:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:23:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:23:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:23:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:23:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:23:10,320 INFO L87 Difference]: Start difference. First operand 68908 states and 105100 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:23:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:23:18,350 INFO L93 Difference]: Finished difference Result 146872 states and 224215 transitions. [2023-12-20 20:23:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 20:23:18,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-20 20:23:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:23:18,711 INFO L225 Difference]: With dead ends: 146872 [2023-12-20 20:23:18,711 INFO L226 Difference]: Without dead ends: 78074 [2023-12-20 20:23:18,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:23:18,882 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 398 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 20:23:18,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1537 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 20:23:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78074 states. [2023-12-20 20:23:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78074 to 75522. [2023-12-20 20:23:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75522 states, 46650 states have (on average 1.332411575562701) internal successors, (62157), 47198 states have internal predecessors, (62157), 26755 states have call successors, (26755), 2116 states have call predecessors, (26755), 2116 states have return successors, (26755), 26207 states have call predecessors, (26755), 26755 states have call successors, (26755) [2023-12-20 20:23:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75522 states to 75522 states and 115667 transitions. [2023-12-20 20:23:28,221 INFO L78 Accepts]: Start accepts. Automaton has 75522 states and 115667 transitions. Word has length 752 [2023-12-20 20:23:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:23:28,222 INFO L495 AbstractCegarLoop]: Abstraction has 75522 states and 115667 transitions. [2023-12-20 20:23:28,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:23:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 75522 states and 115667 transitions. [2023-12-20 20:23:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-20 20:23:28,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:23:28,241 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:23:28,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 20:23:28,450 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 [2023-12-20 20:23:28,450 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:23:28,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:23:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 373558599, now seen corresponding path program 1 times [2023-12-20 20:23:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:23:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454564870] [2023-12-20 20:23:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:23:28,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:23:28,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982134675] [2023-12-20 20:23:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:23:28,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:23:28,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:23:28,502 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) [2023-12-20 20:23:28,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 20:23:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:23:29,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:23:29,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:23:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-20 20:23:30,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:23:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:23:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454564870] [2023-12-20 20:23:30,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:23:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982134675] [2023-12-20 20:23:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982134675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:23:30,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:23:30,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:23:30,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475151445] [2023-12-20 20:23:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:23:30,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:23:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:23:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:23:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:23:30,839 INFO L87 Difference]: Start difference. First operand 75522 states and 115667 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-20 20:23:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:23:51,271 INFO L93 Difference]: Finished difference Result 277667 states and 424338 transitions. [2023-12-20 20:23:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 20:23:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-20 20:23:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:23:52,182 INFO L225 Difference]: With dead ends: 277667 [2023-12-20 20:23:52,182 INFO L226 Difference]: Without dead ends: 203643 [2023-12-20 20:23:52,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:23:52,392 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 411 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:23:52,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1336 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:23:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203643 states.