/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:49:54,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:49:54,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:49:54,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:49:54,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:49:54,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:49:54,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:49:54,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:49:54,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:49:54,299 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:49:54,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:49:54,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:49:54,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:49:54,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:49:54,304 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:49:54,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:49:54,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:49:54,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:49:54,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:49:54,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:49:54,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:49:54,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:49:54,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:49:54,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:49:54,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:49:54,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:49:54,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:49:54,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:49:54,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:49:54,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:49:54,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:49:54,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:49:54,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:49:54,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:49:54,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:49:54,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:49:54,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:49:54,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:49:54,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:49:54,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:49:54,314 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:49:54,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:49:54,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:49:54,318 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:49:54,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:49:54,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:49:54,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:49:54,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:49:54,544 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:49:54,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.i [2023-12-19 06:49:55,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:49:56,036 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:49:56,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.i [2023-12-19 06:49:56,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5334f96/17b44083f691498dbe35fb3e2962174a/FLAG80ec1ef92 [2023-12-19 06:49:56,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5334f96/17b44083f691498dbe35fb3e2962174a [2023-12-19 06:49:56,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:49:56,067 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:49:56,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:49:56,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:49:56,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:49:56,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273ebc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56, skipping insertion in model container [2023-12-19 06:49:56,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:49:56,263 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-250_file-31.i[916,929] [2023-12-19 06:49:56,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:49:56,447 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:49:56,458 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-250_file-31.i[916,929] [2023-12-19 06:49:56,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:49:56,564 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:49:56,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56 WrapperNode [2023-12-19 06:49:56,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:49:56,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:49:56,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:49:56,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:49:56,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,657 INFO L138 Inliner]: procedures = 26, calls = 83, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 498 [2023-12-19 06:49:56,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:49:56,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:49:56,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:49:56,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:49:56,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,739 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:49:56,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,789 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:49:56,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:49:56,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:49:56,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:49:56,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (1/1) ... [2023-12-19 06:49:56,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:49:56,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:56,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 06:49:56,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 06:49:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:49:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:49:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:49:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:49:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:49:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:49:56,964 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:49:56,966 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:49:57,614 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:49:57,651 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:49:57,652 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 06:49:57,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:49:57 BoogieIcfgContainer [2023-12-19 06:49:57,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:49:57,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:49:57,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:49:57,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:49:57,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:49:56" (1/3) ... [2023-12-19 06:49:57,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e5d894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:49:57, skipping insertion in model container [2023-12-19 06:49:57,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:56" (2/3) ... [2023-12-19 06:49:57,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e5d894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:49:57, skipping insertion in model container [2023-12-19 06:49:57,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:49:57" (3/3) ... [2023-12-19 06:49:57,660 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-31.i [2023-12-19 06:49:57,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:49:57,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:49:57,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:49:57,729 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;@edf2096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:49:57,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:49:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 126 states have (on average 1.5952380952380953) internal successors, (201), 127 states have internal predecessors, (201), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-19 06:49:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 06:49:57,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:57,763 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:57,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:57,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1545252652, now seen corresponding path program 1 times [2023-12-19 06:49:57,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:57,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369866947] [2023-12-19 06:49:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369866947] [2023-12-19 06:49:58,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:49:58,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214082761] [2023-12-19 06:49:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:58,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:49:58,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:49:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:58,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:49:58,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2023-12-19 06:49:58,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214082761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:58,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:58,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:49:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575343837] [2023-12-19 06:49:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:58,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:49:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:49:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:49:58,542 INFO L87 Difference]: Start difference. First operand has 199 states, 126 states have (on average 1.5952380952380953) internal successors, (201), 127 states have internal predecessors, (201), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-19 06:49:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:58,599 INFO L93 Difference]: Finished difference Result 395 states and 750 transitions. [2023-12-19 06:49:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:49:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) Word has length 437 [2023-12-19 06:49:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:58,609 INFO L225 Difference]: With dead ends: 395 [2023-12-19 06:49:58,610 INFO L226 Difference]: Without dead ends: 197 [2023-12-19 06:49:58,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:49:58,617 INFO L413 NwaCegarLoop]: 330 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, 330 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 330 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-19 06:49:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-12-19 06:49:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 125 states have (on average 1.544) internal successors, (193), 125 states have internal predecessors, (193), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-19 06:49:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 333 transitions. [2023-12-19 06:49:58,690 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 333 transitions. Word has length 437 [2023-12-19 06:49:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:58,691 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 333 transitions. [2023-12-19 06:49:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-19 06:49:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 333 transitions. [2023-12-19 06:49:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-19 06:49:58,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:58,702 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:58,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:58,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:49:58,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:58,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2047579806, now seen corresponding path program 1 times [2023-12-19 06:49:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654475194] [2023-12-19 06:49:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:59,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:59,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148175064] [2023-12-19 06:49:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:59,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:59,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:59,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:49:59,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:49:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:59,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:49:59,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-12-19 06:49:59,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654475194] [2023-12-19 06:49:59,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:59,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148175064] [2023-12-19 06:49:59,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148175064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:59,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:59,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:49:59,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312176027] [2023-12-19 06:49:59,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:49:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:49:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:59,977 INFO L87 Difference]: Start difference. First operand 197 states and 333 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:00,094 INFO L93 Difference]: Finished difference Result 589 states and 997 transitions. [2023-12-19 06:50:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:50:00,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 438 [2023-12-19 06:50:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:00,104 INFO L225 Difference]: With dead ends: 589 [2023-12-19 06:50:00,104 INFO L226 Difference]: Without dead ends: 393 [2023-12-19 06:50:00,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:00,112 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 129 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:00,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 641 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:50:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-19 06:50:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 391. [2023-12-19 06:50:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 248 states have (on average 1.532258064516129) internal successors, (380), 248 states have internal predecessors, (380), 140 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 06:50:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 660 transitions. [2023-12-19 06:50:00,220 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 660 transitions. Word has length 438 [2023-12-19 06:50:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:00,221 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 660 transitions. [2023-12-19 06:50:00,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 660 transitions. [2023-12-19 06:50:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:00,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:00,226 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:00,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:00,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:50:00,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:00,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:00,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1223917467, now seen corresponding path program 1 times [2023-12-19 06:50:00,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:00,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988766122] [2023-12-19 06:50:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:00,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:00,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:00,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175398272] [2023-12-19 06:50:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:00,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:00,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:00,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:00,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:50:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:00,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:50:00,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-12-19 06:50:00,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:50:00,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988766122] [2023-12-19 06:50:00,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175398272] [2023-12-19 06:50:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175398272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:50:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:50:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:50:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833465796] [2023-12-19 06:50:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:50:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:50:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:50:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:00,851 INFO L87 Difference]: Start difference. First operand 391 states and 660 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:00,933 INFO L93 Difference]: Finished difference Result 1007 states and 1698 transitions. [2023-12-19 06:50:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:50:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 439 [2023-12-19 06:50:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:00,940 INFO L225 Difference]: With dead ends: 1007 [2023-12-19 06:50:00,941 INFO L226 Difference]: Without dead ends: 617 [2023-12-19 06:50:00,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:00,945 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 180 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:00,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 774 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:50:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-19 06:50:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2023-12-19 06:50:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 408 states have (on average 1.5392156862745099) internal successors, (628), 410 states have internal predecessors, (628), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2023-12-19 06:50:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1028 transitions. [2023-12-19 06:50:01,029 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1028 transitions. Word has length 439 [2023-12-19 06:50:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:01,033 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1028 transitions. [2023-12-19 06:50:01,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1028 transitions. [2023-12-19 06:50:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:01,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:01,038 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:01,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:01,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:01,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:01,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1699242531, now seen corresponding path program 1 times [2023-12-19 06:50:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444822827] [2023-12-19 06:50:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:01,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:01,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:01,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384484613] [2023-12-19 06:50:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:01,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:01,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:01,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:01,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:50:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:01,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:50:01,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-12-19 06:50:01,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:50:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444822827] [2023-12-19 06:50:01,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384484613] [2023-12-19 06:50:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384484613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:50:01,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:50:01,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:50:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871475442] [2023-12-19 06:50:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:50:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:50:01,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:50:01,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:01,631 INFO L87 Difference]: Start difference. First operand 613 states and 1028 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:01,711 INFO L93 Difference]: Finished difference Result 1833 states and 3074 transitions. [2023-12-19 06:50:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:50:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 439 [2023-12-19 06:50:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:01,720 INFO L225 Difference]: With dead ends: 1833 [2023-12-19 06:50:01,720 INFO L226 Difference]: Without dead ends: 1221 [2023-12-19 06:50:01,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:01,723 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 323 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:01,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 968 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:50:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-12-19 06:50:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 629. [2023-12-19 06:50:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 424 states have (on average 1.528301886792453) internal successors, (648), 426 states have internal predecessors, (648), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2023-12-19 06:50:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1048 transitions. [2023-12-19 06:50:01,813 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1048 transitions. Word has length 439 [2023-12-19 06:50:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:01,813 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1048 transitions. [2023-12-19 06:50:01,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1048 transitions. [2023-12-19 06:50:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:01,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:01,817 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:01,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:02,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:02,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:02,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:02,026 INFO L85 PathProgramCache]: Analyzing trace with hash -820717403, now seen corresponding path program 1 times [2023-12-19 06:50:02,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:02,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107370195] [2023-12-19 06:50:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:02,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336611900] [2023-12-19 06:50:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:02,074 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:02,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:50:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:02,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:50:02,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4899 proven. 102 refuted. 0 times theorem prover too weak. 4659 trivial. 0 not checked. [2023-12-19 06:50:03,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 105 proven. 102 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-12-19 06:50:03,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:03,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107370195] [2023-12-19 06:50:03,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:03,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336611900] [2023-12-19 06:50:03,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336611900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:03,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 06:50:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396420393] [2023-12-19 06:50:03,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:50:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:50:03,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:50:03,572 INFO L87 Difference]: Start difference. First operand 629 states and 1048 transitions. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:50:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:06,409 INFO L93 Difference]: Finished difference Result 4607 states and 7588 transitions. [2023-12-19 06:50:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-19 06:50:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) Word has length 439 [2023-12-19 06:50:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:06,430 INFO L225 Difference]: With dead ends: 4607 [2023-12-19 06:50:06,430 INFO L226 Difference]: Without dead ends: 3979 [2023-12-19 06:50:06,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=833, Invalid=2473, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 06:50:06,436 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2590 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 1085 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:06,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 2231 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1085 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 06:50:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2023-12-19 06:50:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 2315. [2023-12-19 06:50:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 1604 states have (on average 1.532418952618454) internal successors, (2458), 1616 states have internal predecessors, (2458), 686 states have call successors, (686), 24 states have call predecessors, (686), 24 states have return successors, (686), 674 states have call predecessors, (686), 686 states have call successors, (686) [2023-12-19 06:50:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3830 transitions. [2023-12-19 06:50:06,756 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3830 transitions. Word has length 439 [2023-12-19 06:50:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:06,757 INFO L495 AbstractCegarLoop]: Abstraction has 2315 states and 3830 transitions. [2023-12-19 06:50:06,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:50:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3830 transitions. [2023-12-19 06:50:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:06,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:06,762 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:06,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:06,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:06,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:06,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:06,972 INFO L85 PathProgramCache]: Analyzing trace with hash -562551965, now seen corresponding path program 1 times [2023-12-19 06:50:06,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:06,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55608440] [2023-12-19 06:50:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:06,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:07,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323401568] [2023-12-19 06:50:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:07,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:07,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:07,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:50:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:07,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:50:07,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4659 proven. 126 refuted. 0 times theorem prover too weak. 4875 trivial. 0 not checked. [2023-12-19 06:50:07,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 81 proven. 126 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-12-19 06:50:07,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55608440] [2023-12-19 06:50:07,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323401568] [2023-12-19 06:50:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323401568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:07,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:50:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399789112] [2023-12-19 06:50:07,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:07,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:50:07,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:50:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:50:07,856 INFO L87 Difference]: Start difference. First operand 2315 states and 3830 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 06:50:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:08,241 INFO L93 Difference]: Finished difference Result 3529 states and 5769 transitions. [2023-12-19 06:50:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:50:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 439 [2023-12-19 06:50:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:08,248 INFO L225 Difference]: With dead ends: 3529 [2023-12-19 06:50:08,249 INFO L226 Difference]: Without dead ends: 1215 [2023-12-19 06:50:08,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 870 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:50:08,256 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 176 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:08,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 585 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:50:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-19 06:50:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1183. [2023-12-19 06:50:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 819 states have (on average 1.452991452991453) internal successors, (1190), 825 states have internal predecessors, (1190), 343 states have call successors, (343), 20 states have call predecessors, (343), 20 states have return successors, (343), 337 states have call predecessors, (343), 343 states have call successors, (343) [2023-12-19 06:50:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1876 transitions. [2023-12-19 06:50:08,379 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1876 transitions. Word has length 439 [2023-12-19 06:50:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:08,380 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1876 transitions. [2023-12-19 06:50:08,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 06:50:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1876 transitions. [2023-12-19 06:50:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:08,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:08,383 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:08,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:08,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:08,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:08,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:08,595 INFO L85 PathProgramCache]: Analyzing trace with hash 286144735, now seen corresponding path program 1 times [2023-12-19 06:50:08,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:08,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105024323] [2023-12-19 06:50:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:08,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:08,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74699733] [2023-12-19 06:50:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:08,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:08,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:08,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:08,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:50:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:08,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:50:08,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-12-19 06:50:09,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:50:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105024323] [2023-12-19 06:50:09,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74699733] [2023-12-19 06:50:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74699733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:50:09,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:50:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 06:50:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290137239] [2023-12-19 06:50:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:50:09,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:50:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:50:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:50:09,106 INFO L87 Difference]: Start difference. First operand 1183 states and 1876 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:10,188 INFO L93 Difference]: Finished difference Result 4206 states and 6714 transitions. [2023-12-19 06:50:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 06:50:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 439 [2023-12-19 06:50:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:10,203 INFO L225 Difference]: With dead ends: 4206 [2023-12-19 06:50:10,203 INFO L226 Difference]: Without dead ends: 2886 [2023-12-19 06:50:10,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:50:10,208 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 1036 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:10,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 2068 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:50:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2023-12-19 06:50:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2864. [2023-12-19 06:50:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2045 states have (on average 1.473838630806846) internal successors, (3014), 2063 states have internal predecessors, (3014), 774 states have call successors, (774), 44 states have call predecessors, (774), 44 states have return successors, (774), 756 states have call predecessors, (774), 774 states have call successors, (774) [2023-12-19 06:50:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4562 transitions. [2023-12-19 06:50:10,502 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4562 transitions. Word has length 439 [2023-12-19 06:50:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:10,503 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4562 transitions. [2023-12-19 06:50:10,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4562 transitions. [2023-12-19 06:50:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:10,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:10,508 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:10,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:10,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:10,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -734923619, now seen corresponding path program 1 times [2023-12-19 06:50:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305442036] [2023-12-19 06:50:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:10,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114202155] [2023-12-19 06:50:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:10,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:10,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:10,772 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:10,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:50:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:11,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:50:11,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 2143 proven. 24 refuted. 0 times theorem prover too weak. 7493 trivial. 0 not checked. [2023-12-19 06:50:11,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 183 proven. 24 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-12-19 06:50:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305442036] [2023-12-19 06:50:12,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114202155] [2023-12-19 06:50:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114202155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:12,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 06:50:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173428971] [2023-12-19 06:50:12,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:12,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:50:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:50:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:50:12,121 INFO L87 Difference]: Start difference. First operand 2864 states and 4562 transitions. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:50:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:14,551 INFO L93 Difference]: Finished difference Result 10169 states and 16063 transitions. [2023-12-19 06:50:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 06:50:14,551 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) Word has length 439 [2023-12-19 06:50:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:14,581 INFO L225 Difference]: With dead ends: 10169 [2023-12-19 06:50:14,581 INFO L226 Difference]: Without dead ends: 7306 [2023-12-19 06:50:14,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2023-12-19 06:50:14,591 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1323 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:14,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1839 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 06:50:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7306 states. [2023-12-19 06:50:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7306 to 4916. [2023-12-19 06:50:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 3526 states have (on average 1.4605785592739648) internal successors, (5150), 3559 states have internal predecessors, (5150), 1308 states have call successors, (1308), 81 states have call predecessors, (1308), 81 states have return successors, (1308), 1275 states have call predecessors, (1308), 1308 states have call successors, (1308) [2023-12-19 06:50:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7766 transitions. [2023-12-19 06:50:15,116 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7766 transitions. Word has length 439 [2023-12-19 06:50:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:15,117 INFO L495 AbstractCegarLoop]: Abstraction has 4916 states and 7766 transitions. [2023-12-19 06:50:15,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:50:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7766 transitions. [2023-12-19 06:50:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:15,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:15,149 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:15,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:15,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:50:15,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:15,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1871099935, now seen corresponding path program 1 times [2023-12-19 06:50:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:15,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214275990] [2023-12-19 06:50:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:15,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:15,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:15,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186969976] [2023-12-19 06:50:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:15,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:15,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:15,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:15,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:50:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:15,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:50:15,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 5875 proven. 168 refuted. 0 times theorem prover too weak. 3617 trivial. 0 not checked. [2023-12-19 06:50:16,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 240 proven. 171 refuted. 0 times theorem prover too weak. 9249 trivial. 0 not checked. [2023-12-19 06:50:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214275990] [2023-12-19 06:50:17,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186969976] [2023-12-19 06:50:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186969976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:17,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 06:50:17,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238718337] [2023-12-19 06:50:17,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:17,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:50:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:50:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:50:17,043 INFO L87 Difference]: Start difference. First operand 4916 states and 7766 transitions. Second operand has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 6 states have call successors, (140), 4 states have call predecessors, (140), 8 states have return successors, (140), 6 states have call predecessors, (140), 6 states have call successors, (140) [2023-12-19 06:50:20,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:20,809 INFO L93 Difference]: Finished difference Result 14099 states and 22216 transitions. [2023-12-19 06:50:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-19 06:50:20,810 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 6 states have call successors, (140), 4 states have call predecessors, (140), 8 states have return successors, (140), 6 states have call predecessors, (140), 6 states have call successors, (140) Word has length 439 [2023-12-19 06:50:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:20,863 INFO L225 Difference]: With dead ends: 14099 [2023-12-19 06:50:20,864 INFO L226 Difference]: Without dead ends: 9184 [2023-12-19 06:50:20,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=841, Invalid=2129, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 06:50:20,884 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2432 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 1274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 4293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1274 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:20,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 3503 Invalid, 4293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1274 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 06:50:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9184 states. [2023-12-19 06:50:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9184 to 5891. [2023-12-19 06:50:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5891 states, 4217 states have (on average 1.457908465733934) internal successors, (6148), 4258 states have internal predecessors, (6148), 1571 states have call successors, (1571), 102 states have call predecessors, (1571), 102 states have return successors, (1571), 1530 states have call predecessors, (1571), 1571 states have call successors, (1571) [2023-12-19 06:50:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5891 states to 5891 states and 9290 transitions. [2023-12-19 06:50:21,647 INFO L78 Accepts]: Start accepts. Automaton has 5891 states and 9290 transitions. Word has length 439 [2023-12-19 06:50:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:21,647 INFO L495 AbstractCegarLoop]: Abstraction has 5891 states and 9290 transitions. [2023-12-19 06:50:21,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 6 states have call successors, (140), 4 states have call predecessors, (140), 8 states have return successors, (140), 6 states have call predecessors, (140), 6 states have call successors, (140) [2023-12-19 06:50:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5891 states and 9290 transitions. [2023-12-19 06:50:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:21,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:21,656 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:21,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:21,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:21,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 715541219, now seen corresponding path program 1 times [2023-12-19 06:50:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627646470] [2023-12-19 06:50:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:21,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135938042] [2023-12-19 06:50:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:21,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:21,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:21,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:21,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:50:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:22,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:50:22,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-12-19 06:50:23,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:50:23,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627646470] [2023-12-19 06:50:23,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135938042] [2023-12-19 06:50:23,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135938042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:50:23,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:50:23,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:50:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678046236] [2023-12-19 06:50:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:50:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:50:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:50:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:23,163 INFO L87 Difference]: Start difference. First operand 5891 states and 9290 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:23,831 INFO L93 Difference]: Finished difference Result 14110 states and 22241 transitions. [2023-12-19 06:50:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:50:23,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 439 [2023-12-19 06:50:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:23,857 INFO L225 Difference]: With dead ends: 14110 [2023-12-19 06:50:23,858 INFO L226 Difference]: Without dead ends: 8309 [2023-12-19 06:50:23,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:50:23,876 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 130 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:23,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 615 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:50:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8309 states. [2023-12-19 06:50:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8309 to 8307. [2023-12-19 06:50:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 5841 states have (on average 1.448210922787194) internal successors, (8459), 5901 states have internal predecessors, (8459), 2309 states have call successors, (2309), 156 states have call predecessors, (2309), 156 states have return successors, (2309), 2249 states have call predecessors, (2309), 2309 states have call successors, (2309) [2023-12-19 06:50:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 13077 transitions. [2023-12-19 06:50:24,691 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 13077 transitions. Word has length 439 [2023-12-19 06:50:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:24,692 INFO L495 AbstractCegarLoop]: Abstraction has 8307 states and 13077 transitions. [2023-12-19 06:50:24,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-12-19 06:50:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 13077 transitions. [2023-12-19 06:50:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:24,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:24,700 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:24,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:24,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:50:24,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:24,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1642335841, now seen corresponding path program 1 times [2023-12-19 06:50:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662657960] [2023-12-19 06:50:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:24,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040322856] [2023-12-19 06:50:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:24,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:24,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:24,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:25,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:50:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:25,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:50:25,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 2143 proven. 24 refuted. 0 times theorem prover too weak. 7493 trivial. 0 not checked. [2023-12-19 06:50:25,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 183 proven. 24 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-12-19 06:50:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662657960] [2023-12-19 06:50:26,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040322856] [2023-12-19 06:50:26,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040322856] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:26,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:26,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 06:50:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070256420] [2023-12-19 06:50:26,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:26,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:50:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:50:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:50:26,200 INFO L87 Difference]: Start difference. First operand 8307 states and 13077 transitions. Second operand has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:50:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:29,471 INFO L93 Difference]: Finished difference Result 29577 states and 46683 transitions. [2023-12-19 06:50:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 06:50:29,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) Word has length 439 [2023-12-19 06:50:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:29,542 INFO L225 Difference]: With dead ends: 29577 [2023-12-19 06:50:29,542 INFO L226 Difference]: Without dead ends: 21360 [2023-12-19 06:50:29,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2023-12-19 06:50:29,571 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1283 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:29,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1672 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:50:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21360 states. [2023-12-19 06:50:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21360 to 17010. [2023-12-19 06:50:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17010 states, 11814 states have (on average 1.440832910106653) internal successors, (17022), 11942 states have internal predecessors, (17022), 4880 states have call successors, (4880), 315 states have call predecessors, (4880), 315 states have return successors, (4880), 4752 states have call predecessors, (4880), 4880 states have call successors, (4880) [2023-12-19 06:50:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17010 states to 17010 states and 26782 transitions. [2023-12-19 06:50:31,625 INFO L78 Accepts]: Start accepts. Automaton has 17010 states and 26782 transitions. Word has length 439 [2023-12-19 06:50:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:31,626 INFO L495 AbstractCegarLoop]: Abstraction has 17010 states and 26782 transitions. [2023-12-19 06:50:31,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:50:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 17010 states and 26782 transitions. [2023-12-19 06:50:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 06:50:31,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:31,635 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:31,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:31,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:50:31,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:31,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 963687713, now seen corresponding path program 1 times [2023-12-19 06:50:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110392201] [2023-12-19 06:50:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:31,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:31,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286297536] [2023-12-19 06:50:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:31,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:31,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:31,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:50:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:32,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-19 06:50:32,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 07:03:09,177 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 07:03:09,177 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 07:03:10,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:10,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0