/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:38:18,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:38:18,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:38:18,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:38:18,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:38:18,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:38:18,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:38:18,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:38:18,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:38:18,313 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:38:18,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:38:18,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:38:18,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:38:18,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:38:18,314 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:38:18,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:38:18,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:38:18,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:38:18,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:38:18,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:38:18,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:38:18,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:38:18,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:38:18,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:38:18,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:38:18,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:38:18,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:38:18,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:38:18,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:38:18,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:38:18,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:38:18,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:38:18,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:38:18,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:38:18,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:38:18,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:38:18,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:38:18,320 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:38:18,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:38:18,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:38:18,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:38:18,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:38:18,518 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:38:18,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i [2023-12-19 07:38:19,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:38:19,935 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:38:19,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i [2023-12-19 07:38:19,948 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306748649/b6d35d8ea3494917b89058d3e0d2dad2/FLAG25b7c34d9 [2023-12-19 07:38:19,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306748649/b6d35d8ea3494917b89058d3e0d2dad2 [2023-12-19 07:38:19,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:38:19,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:38:19,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:38:19,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:38:19,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:38:19,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:38:19" (1/1) ... [2023-12-19 07:38:19,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc6862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:19, skipping insertion in model container [2023-12-19 07:38:19,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:38:19" (1/1) ... [2023-12-19 07:38:20,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:38:20,123 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i[916,929] [2023-12-19 07:38:20,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:38:20,303 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:38:20,318 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-37.i[916,929] [2023-12-19 07:38:20,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:38:20,394 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:38:20,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20 WrapperNode [2023-12-19 07:38:20,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:38:20,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:38:20,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:38:20,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:38:20,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,609 INFO L138 Inliner]: procedures = 26, calls = 138, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 893 [2023-12-19 07:38:20,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:38:20,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:38:20,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:38:20,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:38:20,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,714 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:38:20,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:38:20,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:38:20,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:38:20,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:38:20,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (1/1) ... [2023-12-19 07:38:20,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:38:20,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:20,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:38:20,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:38:20,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:38:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:38:20,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:38:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:38:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:38:20,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:38:21,060 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:38:21,061 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:38:21,796 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:38:21,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:38:21,842 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:38:21,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:38:21 BoogieIcfgContainer [2023-12-19 07:38:21,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:38:21,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:38:21,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:38:21,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:38:21,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:38:19" (1/3) ... [2023-12-19 07:38:21,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1233e493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:38:21, skipping insertion in model container [2023-12-19 07:38:21,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:38:20" (2/3) ... [2023-12-19 07:38:21,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1233e493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:38:21, skipping insertion in model container [2023-12-19 07:38:21,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:38:21" (3/3) ... [2023-12-19 07:38:21,850 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-37.i [2023-12-19 07:38:21,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:38:21,862 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:38:21,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:38:21,914 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;@509a12f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:38:21,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:38:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 217 states have (on average 1.6129032258064515) internal successors, (350), 218 states have internal predecessors, (350), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-19 07:38:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:21,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:21,955 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:21,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:21,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash 304955146, now seen corresponding path program 1 times [2023-12-19 07:38:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:21,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272012259] [2023-12-19 07:38:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:21,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:22,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272012259] [2023-12-19 07:38:22,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:38:22,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767993985] [2023-12-19 07:38:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:22,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:22,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:22,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:22,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:38:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:22,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:38:22,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 30752 trivial. 0 not checked. [2023-12-19 07:38:22,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767993985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:22,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:22,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:38:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807799582] [2023-12-19 07:38:22,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:22,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:38:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:38:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:38:22,929 INFO L87 Difference]: Start difference. First operand has 345 states, 217 states have (on average 1.6129032258064515) internal successors, (350), 218 states have internal predecessors, (350), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (125), 2 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-19 07:38:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:23,017 INFO L93 Difference]: Finished difference Result 687 states and 1323 transitions. [2023-12-19 07:38:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:38:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (125), 2 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 2 states have call successors, (125) Word has length 786 [2023-12-19 07:38:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:23,028 INFO L225 Difference]: With dead ends: 687 [2023-12-19 07:38:23,029 INFO L226 Difference]: Without dead ends: 343 [2023-12-19 07:38:23,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:38:23,036 INFO L413 NwaCegarLoop]: 588 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, 588 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:23,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 588 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-19 07:38:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-12-19 07:38:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 states have internal predecessors, (341), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-19 07:38:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 591 transitions. [2023-12-19 07:38:23,133 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 591 transitions. Word has length 786 [2023-12-19 07:38:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:23,134 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 591 transitions. [2023-12-19 07:38:23,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (125), 2 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-19 07:38:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 591 transitions. [2023-12-19 07:38:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:23,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:23,151 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:23,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:23,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:38:23,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:23,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash -636786118, now seen corresponding path program 1 times [2023-12-19 07:38:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:23,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470920319] [2023-12-19 07:38:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:23,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:23,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:23,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315230426] [2023-12-19 07:38:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:23,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:23,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:23,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:23,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:38:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:23,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:23,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:23,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:23,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470920319] [2023-12-19 07:38:23,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:23,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315230426] [2023-12-19 07:38:23,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315230426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:23,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:23,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:38:23,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084277303] [2023-12-19 07:38:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:23,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:23,973 INFO L87 Difference]: Start difference. First operand 343 states and 591 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:24,109 INFO L93 Difference]: Finished difference Result 858 states and 1488 transitions. [2023-12-19 07:38:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:24,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:24,118 INFO L225 Difference]: With dead ends: 858 [2023-12-19 07:38:24,119 INFO L226 Difference]: Without dead ends: 516 [2023-12-19 07:38:24,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:24,124 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 307 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:24,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1113 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:38:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-12-19 07:38:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2023-12-19 07:38:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 359 states have (on average 1.6518105849582172) internal successors, (593), 360 states have internal predecessors, (593), 151 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (151), 150 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-19 07:38:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 895 transitions. [2023-12-19 07:38:24,180 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 895 transitions. Word has length 786 [2023-12-19 07:38:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:24,182 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 895 transitions. [2023-12-19 07:38:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 895 transitions. [2023-12-19 07:38:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:24,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:24,190 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:24,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:24,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:38:24,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:24,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1239696700, now seen corresponding path program 1 times [2023-12-19 07:38:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031903474] [2023-12-19 07:38:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:24,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603104871] [2023-12-19 07:38:24,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:24,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:24,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:24,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:24,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:38:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:24,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:38:24,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:24,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031903474] [2023-12-19 07:38:24,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603104871] [2023-12-19 07:38:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603104871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:24,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:38:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371713209] [2023-12-19 07:38:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:24,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:38:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:38:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:38:24,891 INFO L87 Difference]: Start difference. First operand 513 states and 895 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:25,165 INFO L93 Difference]: Finished difference Result 1408 states and 2469 transitions. [2023-12-19 07:38:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:38:25,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:25,173 INFO L225 Difference]: With dead ends: 1408 [2023-12-19 07:38:25,173 INFO L226 Difference]: Without dead ends: 896 [2023-12-19 07:38:25,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:38:25,177 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 363 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:25,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2273 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:38:25,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-19 07:38:25,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 893. [2023-12-19 07:38:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 657 states have (on average 1.6879756468797564) internal successors, (1109), 660 states have internal predecessors, (1109), 231 states have call successors, (231), 4 states have call predecessors, (231), 4 states have return successors, (231), 228 states have call predecessors, (231), 231 states have call successors, (231) [2023-12-19 07:38:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1571 transitions. [2023-12-19 07:38:25,220 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1571 transitions. Word has length 786 [2023-12-19 07:38:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:25,221 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1571 transitions. [2023-12-19 07:38:25,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:25,221 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1571 transitions. [2023-12-19 07:38:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:25,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:25,228 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:25,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 07:38:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:25,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:25,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1730414402, now seen corresponding path program 1 times [2023-12-19 07:38:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715646659] [2023-12-19 07:38:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:25,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:25,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986776196] [2023-12-19 07:38:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:25,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:25,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:25,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:38:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:25,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:25,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:26,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:26,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715646659] [2023-12-19 07:38:26,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986776196] [2023-12-19 07:38:26,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986776196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:38:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272261789] [2023-12-19 07:38:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:26,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:26,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:26,775 INFO L87 Difference]: Start difference. First operand 893 states and 1571 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:26,863 INFO L93 Difference]: Finished difference Result 2677 states and 4711 transitions. [2023-12-19 07:38:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:26,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:26,875 INFO L225 Difference]: With dead ends: 2677 [2023-12-19 07:38:26,875 INFO L226 Difference]: Without dead ends: 1785 [2023-12-19 07:38:26,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:26,879 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 224 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:26,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1287 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2023-12-19 07:38:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1783. [2023-12-19 07:38:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1312 states have (on average 1.6859756097560976) internal successors, (2212), 1318 states have internal predecessors, (2212), 462 states have call successors, (462), 8 states have call predecessors, (462), 8 states have return successors, (462), 456 states have call predecessors, (462), 462 states have call successors, (462) [2023-12-19 07:38:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 3136 transitions. [2023-12-19 07:38:27,027 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 3136 transitions. Word has length 786 [2023-12-19 07:38:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:27,028 INFO L495 AbstractCegarLoop]: Abstraction has 1783 states and 3136 transitions. [2023-12-19 07:38:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 3136 transitions. [2023-12-19 07:38:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:27,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:27,035 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:27,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:27,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:27,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:27,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash 180628156, now seen corresponding path program 1 times [2023-12-19 07:38:27,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:27,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954848524] [2023-12-19 07:38:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:27,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:27,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392213005] [2023-12-19 07:38:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:27,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:27,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:27,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:27,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:38:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:27,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:27,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:27,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954848524] [2023-12-19 07:38:27,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392213005] [2023-12-19 07:38:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392213005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:38:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001369213] [2023-12-19 07:38:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:27,961 INFO L87 Difference]: Start difference. First operand 1783 states and 3136 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:28,077 INFO L93 Difference]: Finished difference Result 5017 states and 8856 transitions. [2023-12-19 07:38:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:28,092 INFO L225 Difference]: With dead ends: 5017 [2023-12-19 07:38:28,092 INFO L226 Difference]: Without dead ends: 3235 [2023-12-19 07:38:28,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:28,098 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 293 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:28,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1261 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2023-12-19 07:38:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3229. [2023-12-19 07:38:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 2494 states have (on average 1.706495589414595) internal successors, (4256), 2508 states have internal predecessors, (4256), 718 states have call successors, (718), 16 states have call predecessors, (718), 16 states have return successors, (718), 704 states have call predecessors, (718), 718 states have call successors, (718) [2023-12-19 07:38:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 5692 transitions. [2023-12-19 07:38:28,252 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 5692 transitions. Word has length 786 [2023-12-19 07:38:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:28,253 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 5692 transitions. [2023-12-19 07:38:28,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 5692 transitions. [2023-12-19 07:38:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:28,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:28,261 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:28,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 07:38:28,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:28,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:28,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 422115128, now seen corresponding path program 1 times [2023-12-19 07:38:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:28,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556698293] [2023-12-19 07:38:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:28,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477287814] [2023-12-19 07:38:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:28,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:28,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:28,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:38:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:29,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:29,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:29,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556698293] [2023-12-19 07:38:29,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477287814] [2023-12-19 07:38:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477287814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:29,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:38:29,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534507232] [2023-12-19 07:38:29,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:29,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:29,177 INFO L87 Difference]: Start difference. First operand 3229 states and 5692 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:29,377 INFO L93 Difference]: Finished difference Result 9183 states and 16188 transitions. [2023-12-19 07:38:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:29,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:29,408 INFO L225 Difference]: With dead ends: 9183 [2023-12-19 07:38:29,409 INFO L226 Difference]: Without dead ends: 5955 [2023-12-19 07:38:29,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:29,422 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 269 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1263 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 07:38:29,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1263 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5955 states. [2023-12-19 07:38:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5955 to 5949. [2023-12-19 07:38:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5949 states, 4670 states have (on average 1.699357601713062) internal successors, (7936), 4700 states have internal predecessors, (7936), 1246 states have call successors, (1246), 32 states have call predecessors, (1246), 32 states have return successors, (1246), 1216 states have call predecessors, (1246), 1246 states have call successors, (1246) [2023-12-19 07:38:29,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 10428 transitions. [2023-12-19 07:38:29,768 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 10428 transitions. Word has length 786 [2023-12-19 07:38:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:29,769 INFO L495 AbstractCegarLoop]: Abstraction has 5949 states and 10428 transitions. [2023-12-19 07:38:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 10428 transitions. [2023-12-19 07:38:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:29,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:29,783 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:29,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 07:38:29,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:29,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:29,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1094634886, now seen corresponding path program 1 times [2023-12-19 07:38:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142345989] [2023-12-19 07:38:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:30,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341120056] [2023-12-19 07:38:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:30,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:30,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:30,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:30,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:38:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:30,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:30,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:30,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:30,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:30,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142345989] [2023-12-19 07:38:30,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:30,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341120056] [2023-12-19 07:38:30,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341120056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:30,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:38:30,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971156307] [2023-12-19 07:38:30,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:30,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:30,562 INFO L87 Difference]: Start difference. First operand 5949 states and 10428 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:30,806 INFO L93 Difference]: Finished difference Result 17339 states and 30392 transitions. [2023-12-19 07:38:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:30,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:30,852 INFO L225 Difference]: With dead ends: 17339 [2023-12-19 07:38:30,852 INFO L226 Difference]: Without dead ends: 11391 [2023-12-19 07:38:30,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:30,874 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 319 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:30,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1359 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2023-12-19 07:38:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 11381. [2023-12-19 07:38:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11381 states, 9030 states have (on average 1.6965669988925802) internal successors, (15320), 9092 states have internal predecessors, (15320), 2286 states have call successors, (2286), 64 states have call predecessors, (2286), 64 states have return successors, (2286), 2224 states have call predecessors, (2286), 2286 states have call successors, (2286) [2023-12-19 07:38:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11381 states to 11381 states and 19892 transitions. [2023-12-19 07:38:31,501 INFO L78 Accepts]: Start accepts. Automaton has 11381 states and 19892 transitions. Word has length 786 [2023-12-19 07:38:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:31,502 INFO L495 AbstractCegarLoop]: Abstraction has 11381 states and 19892 transitions. [2023-12-19 07:38:31,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11381 states and 19892 transitions. [2023-12-19 07:38:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:31,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:31,531 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:31,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:31,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:31,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash -854395140, now seen corresponding path program 1 times [2023-12-19 07:38:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34377625] [2023-12-19 07:38:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:31,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885995402] [2023-12-19 07:38:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:31,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:31,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:31,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:31,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:38:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:32,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:32,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:32,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:32,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:32,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34377625] [2023-12-19 07:38:32,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:32,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885995402] [2023-12-19 07:38:32,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885995402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:32,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:32,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:38:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484634069] [2023-12-19 07:38:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:32,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:32,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:32,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:32,327 INFO L87 Difference]: Start difference. First operand 11381 states and 19892 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:32,676 INFO L93 Difference]: Finished difference Result 22803 states and 39816 transitions. [2023-12-19 07:38:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:32,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:32,755 INFO L225 Difference]: With dead ends: 22803 [2023-12-19 07:38:32,755 INFO L226 Difference]: Without dead ends: 11423 [2023-12-19 07:38:32,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:32,783 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 288 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:32,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1173 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11423 states. [2023-12-19 07:38:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11423 to 7773. [2023-12-19 07:38:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 6486 states have (on average 1.732963305581252) internal successors, (11240), 6516 states have internal predecessors, (11240), 1246 states have call successors, (1246), 40 states have call predecessors, (1246), 40 states have return successors, (1246), 1216 states have call predecessors, (1246), 1246 states have call successors, (1246) [2023-12-19 07:38:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 13732 transitions. [2023-12-19 07:38:33,210 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 13732 transitions. Word has length 786 [2023-12-19 07:38:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:33,211 INFO L495 AbstractCegarLoop]: Abstraction has 7773 states and 13732 transitions. [2023-12-19 07:38:33,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 13732 transitions. [2023-12-19 07:38:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:33,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:33,224 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:33,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:33,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:38:33,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:33,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1391184314, now seen corresponding path program 1 times [2023-12-19 07:38:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:33,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610877857] [2023-12-19 07:38:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:33,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:33,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016419430] [2023-12-19 07:38:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:33,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:33,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:33,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:33,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:38:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:33,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:38:33,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:33,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:33,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610877857] [2023-12-19 07:38:33,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016419430] [2023-12-19 07:38:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016419430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:33,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:33,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:38:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937867664] [2023-12-19 07:38:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:38:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:38:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:33,964 INFO L87 Difference]: Start difference. First operand 7773 states and 13732 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:34,466 INFO L93 Difference]: Finished difference Result 20731 states and 36392 transitions. [2023-12-19 07:38:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:38:34,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:34,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:34,513 INFO L225 Difference]: With dead ends: 20731 [2023-12-19 07:38:34,514 INFO L226 Difference]: Without dead ends: 12959 [2023-12-19 07:38:34,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:38:34,539 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 237 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:34,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1268 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:38:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12959 states. [2023-12-19 07:38:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12959 to 12953. [2023-12-19 07:38:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 10562 states have (on average 1.6955122135959098) internal successors, (17908), 10624 states have internal predecessors, (17908), 2310 states have call successors, (2310), 80 states have call predecessors, (2310), 80 states have return successors, (2310), 2248 states have call predecessors, (2310), 2310 states have call successors, (2310) [2023-12-19 07:38:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 22528 transitions. [2023-12-19 07:38:35,175 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 22528 transitions. Word has length 786 [2023-12-19 07:38:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 22528 transitions. [2023-12-19 07:38:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 22528 transitions. [2023-12-19 07:38:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:35,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:35,203 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:35,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 07:38:35,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:35,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:35,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1900657404, now seen corresponding path program 1 times [2023-12-19 07:38:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46175602] [2023-12-19 07:38:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:35,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:35,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957286686] [2023-12-19 07:38:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:35,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:35,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:35,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:35,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:38:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:35,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:38:35,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 14434 proven. 237 refuted. 0 times theorem prover too weak. 16329 trivial. 0 not checked. [2023-12-19 07:38:36,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:38:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 135 proven. 237 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-12-19 07:38:37,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46175602] [2023-12-19 07:38:37,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957286686] [2023-12-19 07:38:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957286686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:38:37,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:38:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:38:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677765296] [2023-12-19 07:38:37,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:38:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:38:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:37,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:38:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:38:37,132 INFO L87 Difference]: Start difference. First operand 12953 states and 22528 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (204), 2 states have call predecessors, (204), 4 states have return successors, (205), 2 states have call predecessors, (205), 2 states have call successors, (205) [2023-12-19 07:38:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:37,869 INFO L93 Difference]: Finished difference Result 20829 states and 36359 transitions. [2023-12-19 07:38:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:38:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (204), 2 states have call predecessors, (204), 4 states have return successors, (205), 2 states have call predecessors, (205), 2 states have call successors, (205) Word has length 786 [2023-12-19 07:38:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:37,887 INFO L225 Difference]: With dead ends: 20829 [2023-12-19 07:38:37,887 INFO L226 Difference]: Without dead ends: 7877 [2023-12-19 07:38:37,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1564 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:38:37,904 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 557 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:37,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1084 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:38:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2023-12-19 07:38:38,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7789. [2023-12-19 07:38:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 6498 states have (on average 1.7020621729763004) internal successors, (11060), 6528 states have internal predecessors, (11060), 1246 states have call successors, (1246), 44 states have call predecessors, (1246), 44 states have return successors, (1246), 1216 states have call predecessors, (1246), 1246 states have call successors, (1246) [2023-12-19 07:38:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 13552 transitions. [2023-12-19 07:38:38,175 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 13552 transitions. Word has length 786 [2023-12-19 07:38:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:38,175 INFO L495 AbstractCegarLoop]: Abstraction has 7789 states and 13552 transitions. [2023-12-19 07:38:38,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (204), 2 states have call predecessors, (204), 4 states have return successors, (205), 2 states have call predecessors, (205), 2 states have call successors, (205) [2023-12-19 07:38:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 13552 transitions. [2023-12-19 07:38:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:38,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:38,188 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:38,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 07:38:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:38:38,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:38,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -42486088, now seen corresponding path program 1 times [2023-12-19 07:38:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487319357] [2023-12-19 07:38:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:38,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111760027] [2023-12-19 07:38:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:38,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:38,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:38,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:38:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:38,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:38:38,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:38,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:38,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487319357] [2023-12-19 07:38:38,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111760027] [2023-12-19 07:38:38,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111760027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:38,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:38,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:38:38,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495930500] [2023-12-19 07:38:38,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:38,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:38:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:38,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:38:38,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:38:38,916 INFO L87 Difference]: Start difference. First operand 7789 states and 13552 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:39,378 INFO L93 Difference]: Finished difference Result 21857 states and 38436 transitions. [2023-12-19 07:38:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:38:39,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:39,408 INFO L225 Difference]: With dead ends: 21857 [2023-12-19 07:38:39,408 INFO L226 Difference]: Without dead ends: 14069 [2023-12-19 07:38:39,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:38:39,422 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 821 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:39,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2271 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:38:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14069 states. [2023-12-19 07:38:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14069 to 7875. [2023-12-19 07:38:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7875 states, 6538 states have (on average 1.6928724380544509) internal successors, (11068), 6569 states have internal predecessors, (11068), 1286 states have call successors, (1286), 50 states have call predecessors, (1286), 50 states have return successors, (1286), 1255 states have call predecessors, (1286), 1286 states have call successors, (1286) [2023-12-19 07:38:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7875 states to 7875 states and 13640 transitions. [2023-12-19 07:38:39,816 INFO L78 Accepts]: Start accepts. Automaton has 7875 states and 13640 transitions. Word has length 786 [2023-12-19 07:38:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:39,817 INFO L495 AbstractCegarLoop]: Abstraction has 7875 states and 13640 transitions. [2023-12-19 07:38:39,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7875 states and 13640 transitions. [2023-12-19 07:38:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:39,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:39,829 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:39,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:40,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:38:40,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:40,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1630833990, now seen corresponding path program 1 times [2023-12-19 07:38:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:40,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912775994] [2023-12-19 07:38:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:40,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:40,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829788463] [2023-12-19 07:38:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:40,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:40,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:40,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:40,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:38:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:40,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:38:40,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 14694 proven. 231 refuted. 0 times theorem prover too weak. 16075 trivial. 0 not checked. [2023-12-19 07:38:40,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:38:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 141 proven. 231 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-12-19 07:38:41,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912775994] [2023-12-19 07:38:41,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829788463] [2023-12-19 07:38:41,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829788463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:38:41,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:38:41,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:38:41,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694943494] [2023-12-19 07:38:41,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:38:41,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:38:41,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:41,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:38:41,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:38:41,583 INFO L87 Difference]: Start difference. First operand 7875 states and 13640 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (203), 2 states have call predecessors, (203), 2 states have call successors, (203) [2023-12-19 07:38:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:42,429 INFO L93 Difference]: Finished difference Result 15799 states and 27287 transitions. [2023-12-19 07:38:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:38:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (203), 2 states have call predecessors, (203), 2 states have call successors, (203) Word has length 786 [2023-12-19 07:38:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:42,457 INFO L225 Difference]: With dead ends: 15799 [2023-12-19 07:38:42,458 INFO L226 Difference]: Without dead ends: 7995 [2023-12-19 07:38:42,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1564 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:38:42,474 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 512 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:42,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1078 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:38:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2023-12-19 07:38:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 7891. [2023-12-19 07:38:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7891 states, 6550 states have (on average 1.67206106870229) internal successors, (10952), 6581 states have internal predecessors, (10952), 1286 states have call successors, (1286), 54 states have call predecessors, (1286), 54 states have return successors, (1286), 1255 states have call predecessors, (1286), 1286 states have call successors, (1286) [2023-12-19 07:38:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 13524 transitions. [2023-12-19 07:38:42,927 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 13524 transitions. Word has length 786 [2023-12-19 07:38:42,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:42,929 INFO L495 AbstractCegarLoop]: Abstraction has 7891 states and 13524 transitions. [2023-12-19 07:38:42,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (203), 2 states have call predecessors, (203), 2 states have call successors, (203) [2023-12-19 07:38:42,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 13524 transitions. [2023-12-19 07:38:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:42,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:42,949 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:42,976 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 07:38:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:38:43,161 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:43,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2111977994, now seen corresponding path program 1 times [2023-12-19 07:38:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712774911] [2023-12-19 07:38:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:43,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787688069] [2023-12-19 07:38:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:43,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:43,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:43,230 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:43,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:38:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:43,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:38:43,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 12972 proven. 108 refuted. 0 times theorem prover too weak. 17920 trivial. 0 not checked. [2023-12-19 07:38:44,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:38:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 264 proven. 108 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-12-19 07:38:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712774911] [2023-12-19 07:38:44,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787688069] [2023-12-19 07:38:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787688069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:38:44,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:38:44,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 07:38:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350600496] [2023-12-19 07:38:44,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:38:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 07:38:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 07:38:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:38:44,758 INFO L87 Difference]: Start difference. First operand 7891 states and 13524 transitions. Second operand has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-12-19 07:38:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:51,365 INFO L93 Difference]: Finished difference Result 45786 states and 75847 transitions. [2023-12-19 07:38:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-19 07:38:51,366 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) Word has length 786 [2023-12-19 07:38:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:51,490 INFO L225 Difference]: With dead ends: 45786 [2023-12-19 07:38:51,490 INFO L226 Difference]: Without dead ends: 37966 [2023-12-19 07:38:51,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1657 GetRequests, 1568 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2872 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1763, Invalid=6427, Unknown=0, NotChecked=0, Total=8190 [2023-12-19 07:38:51,526 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 3550 mSDsluCounter, 4549 mSDsCounter, 0 mSdLazyCounter, 3668 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 3668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:51,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 5116 Invalid, 5002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1334 Valid, 3668 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 07:38:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37966 states. [2023-12-19 07:38:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37966 to 19531. [2023-12-19 07:38:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19531 states, 15388 states have (on average 1.6115154665973486) internal successors, (24798), 15483 states have internal predecessors, (24798), 3930 states have call successors, (3930), 212 states have call predecessors, (3930), 212 states have return successors, (3930), 3835 states have call predecessors, (3930), 3930 states have call successors, (3930) [2023-12-19 07:38:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19531 states to 19531 states and 32658 transitions. [2023-12-19 07:38:53,239 INFO L78 Accepts]: Start accepts. Automaton has 19531 states and 32658 transitions. Word has length 786 [2023-12-19 07:38:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:53,241 INFO L495 AbstractCegarLoop]: Abstraction has 19531 states and 32658 transitions. [2023-12-19 07:38:53,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-12-19 07:38:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 19531 states and 32658 transitions. [2023-12-19 07:38:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:53,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:53,269 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:53,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:38:53,481 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:53,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash -183705292, now seen corresponding path program 1 times [2023-12-19 07:38:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:53,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124298918] [2023-12-19 07:38:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:53,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:53,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:53,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524412990] [2023-12-19 07:38:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:53,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:53,566 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:53,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:38:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:54,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:38:54,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:38:54,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:38:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124298918] [2023-12-19 07:38:54,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:54,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524412990] [2023-12-19 07:38:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524412990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:38:54,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:38:54,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:38:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251798007] [2023-12-19 07:38:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:38:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:38:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:38:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:38:54,246 INFO L87 Difference]: Start difference. First operand 19531 states and 32658 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:38:55,861 INFO L93 Difference]: Finished difference Result 49499 states and 82985 transitions. [2023-12-19 07:38:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:38:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 786 [2023-12-19 07:38:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:38:55,934 INFO L225 Difference]: With dead ends: 49499 [2023-12-19 07:38:55,935 INFO L226 Difference]: Without dead ends: 30039 [2023-12-19 07:38:55,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:38:55,977 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 615 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:38:55,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1537 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:38:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30039 states. [2023-12-19 07:38:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30039 to 19859. [2023-12-19 07:38:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19859 states, 15716 states have (on average 1.6135148892848052) internal successors, (25358), 15811 states have internal predecessors, (25358), 3930 states have call successors, (3930), 212 states have call predecessors, (3930), 212 states have return successors, (3930), 3835 states have call predecessors, (3930), 3930 states have call successors, (3930) [2023-12-19 07:38:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19859 states to 19859 states and 33218 transitions. [2023-12-19 07:38:57,395 INFO L78 Accepts]: Start accepts. Automaton has 19859 states and 33218 transitions. Word has length 786 [2023-12-19 07:38:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:38:57,396 INFO L495 AbstractCegarLoop]: Abstraction has 19859 states and 33218 transitions. [2023-12-19 07:38:57,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:38:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 19859 states and 33218 transitions. [2023-12-19 07:38:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-19 07:38:57,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:38:57,421 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:38:57,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:38:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:57,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:38:57,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:38:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1383052658, now seen corresponding path program 1 times [2023-12-19 07:38:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:38:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043086493] [2023-12-19 07:38:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:38:57,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:38:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157763183] [2023-12-19 07:38:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:38:57,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:38:57,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:38:57,693 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:38:57,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:38:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:38:58,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:38:58,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:38:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 17704 proven. 186 refuted. 0 times theorem prover too weak. 13110 trivial. 0 not checked. [2023-12-19 07:38:58,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:38:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 186 proven. 186 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-12-19 07:38:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:38:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043086493] [2023-12-19 07:38:59,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:38:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157763183] [2023-12-19 07:38:59,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157763183] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:38:59,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:38:59,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:38:59,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614058945] [2023-12-19 07:38:59,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:38:59,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:38:59,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:38:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:38:59,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:38:59,550 INFO L87 Difference]: Start difference. First operand 19859 states and 33218 transitions. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 5 states have call successors, (187), 3 states have call predecessors, (187), 5 states have return successors, (188), 5 states have call predecessors, (188), 5 states have call successors, (188) [2023-12-19 07:39:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:39:01,589 INFO L93 Difference]: Finished difference Result 40131 states and 66795 transitions. [2023-12-19 07:39:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 07:39:01,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 5 states have call successors, (187), 3 states have call predecessors, (187), 5 states have return successors, (188), 5 states have call predecessors, (188), 5 states have call successors, (188) Word has length 786 [2023-12-19 07:39:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:39:01,650 INFO L225 Difference]: With dead ends: 40131 [2023-12-19 07:39:01,651 INFO L226 Difference]: Without dead ends: 20343 [2023-12-19 07:39:01,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1577 GetRequests, 1562 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-12-19 07:39:01,700 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 614 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:39:01,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1095 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:39:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20343 states. [2023-12-19 07:39:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20343 to 19923. [2023-12-19 07:39:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19923 states, 15764 states have (on average 1.5994671403197158) internal successors, (25214), 15859 states have internal predecessors, (25214), 3930 states have call successors, (3930), 228 states have call predecessors, (3930), 228 states have return successors, (3930), 3835 states have call predecessors, (3930), 3930 states have call successors, (3930) [2023-12-19 07:39:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19923 states to 19923 states and 33074 transitions. [2023-12-19 07:39:03,123 INFO L78 Accepts]: Start accepts. Automaton has 19923 states and 33074 transitions. Word has length 786 [2023-12-19 07:39:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:39:03,124 INFO L495 AbstractCegarLoop]: Abstraction has 19923 states and 33074 transitions. [2023-12-19 07:39:03,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 5 states have call successors, (187), 3 states have call predecessors, (187), 5 states have return successors, (188), 5 states have call predecessors, (188), 5 states have call successors, (188) [2023-12-19 07:39:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 19923 states and 33074 transitions. [2023-12-19 07:39:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-19 07:39:03,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:39:03,145 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:39:03,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:39:03,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:39:03,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:39:03,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:39:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1764226914, now seen corresponding path program 1 times [2023-12-19 07:39:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:39:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376627184] [2023-12-19 07:39:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:39:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:39:03,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:39:03,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897650191] [2023-12-19 07:39:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:39:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:39:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:39:03,414 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:39:03,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:39:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:39:03,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:39:03,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:39:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 15624 proven. 186 refuted. 0 times theorem prover too weak. 15190 trivial. 0 not checked. [2023-12-19 07:39:04,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:39:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 186 proven. 186 refuted. 0 times theorem prover too weak. 30628 trivial. 0 not checked. [2023-12-19 07:39:05,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:39:05,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376627184] [2023-12-19 07:39:05,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:39:05,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897650191] [2023-12-19 07:39:05,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897650191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:39:05,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:39:05,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 07:39:05,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597850985] [2023-12-19 07:39:05,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:39:05,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:39:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:39:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:39:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:39:05,449 INFO L87 Difference]: Start difference. First operand 19923 states and 33074 transitions. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 4 states have call successors, (250), 3 states have call predecessors, (250), 5 states have return successors, (250), 4 states have call predecessors, (250), 4 states have call successors, (250) [2023-12-19 07:39:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:39:15,693 INFO L93 Difference]: Finished difference Result 128883 states and 213868 transitions. [2023-12-19 07:39:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 07:39:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 4 states have call successors, (250), 3 states have call predecessors, (250), 5 states have return successors, (250), 4 states have call predecessors, (250), 4 states have call successors, (250) Word has length 787 [2023-12-19 07:39:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:39:16,038 INFO L225 Difference]: With dead ends: 128883 [2023-12-19 07:39:16,039 INFO L226 Difference]: Without dead ends: 109031 [2023-12-19 07:39:16,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1564 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2023-12-19 07:39:16,120 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1810 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:39:16,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 5259 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 07:39:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109031 states. [2023-12-19 07:39:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109031 to 55003. [2023-12-19 07:39:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55003 states, 42872 states have (on average 1.582244821795111) internal successors, (67834), 43157 states have internal predecessors, (67834), 11468 states have call successors, (11468), 662 states have call predecessors, (11468), 662 states have return successors, (11468), 11183 states have call predecessors, (11468), 11468 states have call successors, (11468) [2023-12-19 07:39:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55003 states to 55003 states and 90770 transitions. [2023-12-19 07:39:21,909 INFO L78 Accepts]: Start accepts. Automaton has 55003 states and 90770 transitions. Word has length 787 [2023-12-19 07:39:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:39:21,909 INFO L495 AbstractCegarLoop]: Abstraction has 55003 states and 90770 transitions. [2023-12-19 07:39:21,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 4 states have call successors, (250), 3 states have call predecessors, (250), 5 states have return successors, (250), 4 states have call predecessors, (250), 4 states have call successors, (250) [2023-12-19 07:39:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 55003 states and 90770 transitions. [2023-12-19 07:39:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-19 07:39:21,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:39:21,956 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:39:21,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:39:22,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:39:22,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:39:22,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:39:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash -30122464, now seen corresponding path program 1 times [2023-12-19 07:39:22,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:39:22,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582538726] [2023-12-19 07:39:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:39:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:39:22,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:39:22,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439901151] [2023-12-19 07:39:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:39:22,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:39:22,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:39:22,230 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:39:22,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:39:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:39:22,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:39:22,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:39:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:39:23,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:39:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:39:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582538726] [2023-12-19 07:39:23,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:39:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439901151] [2023-12-19 07:39:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439901151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:39:23,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:39:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:39:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710965438] [2023-12-19 07:39:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:39:23,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:39:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:39:23,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:39:23,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:39:23,478 INFO L87 Difference]: Start difference. First operand 55003 states and 90770 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:39:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:39:33,179 INFO L93 Difference]: Finished difference Result 196365 states and 325106 transitions. [2023-12-19 07:39:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:39:33,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 787 [2023-12-19 07:39:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:39:33,879 INFO L225 Difference]: With dead ends: 196365 [2023-12-19 07:39:33,880 INFO L226 Difference]: Without dead ends: 141433 [2023-12-19 07:39:34,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:39:34,032 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 1940 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:39:34,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 3623 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:39:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141433 states. [2023-12-19 07:39:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141433 to 120931. [2023-12-19 07:39:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120931 states, 94804 states have (on average 1.58744356778195) internal successors, (150496), 95433 states have internal predecessors, (150496), 24792 states have call successors, (24792), 1334 states have call predecessors, (24792), 1334 states have return successors, (24792), 24163 states have call predecessors, (24792), 24792 states have call successors, (24792) [2023-12-19 07:39:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120931 states to 120931 states and 200080 transitions. [2023-12-19 07:39:43,649 INFO L78 Accepts]: Start accepts. Automaton has 120931 states and 200080 transitions. Word has length 787 [2023-12-19 07:39:43,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:39:43,650 INFO L495 AbstractCegarLoop]: Abstraction has 120931 states and 200080 transitions. [2023-12-19 07:39:43,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:39:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 120931 states and 200080 transitions. [2023-12-19 07:39:43,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-19 07:39:43,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:39:43,798 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:39:43,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:39:44,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:39:44,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:39:44,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:39:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash -317020738, now seen corresponding path program 1 times [2023-12-19 07:39:44,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:39:44,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835730761] [2023-12-19 07:39:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:39:44,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:39:44,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:39:44,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478269954] [2023-12-19 07:39:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:39:44,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:39:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:39:44,222 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:39:44,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:39:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:39:44,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:39:44,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:39:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31000 trivial. 0 not checked. [2023-12-19 07:39:44,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:39:44,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:39:44,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835730761] [2023-12-19 07:39:44,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:39:44,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478269954] [2023-12-19 07:39:44,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478269954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:39:44,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:39:44,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:39:44,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292465117] [2023-12-19 07:39:44,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:39:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:39:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:39:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:39:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:39:44,831 INFO L87 Difference]: Start difference. First operand 120931 states and 200080 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:40:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:40:01,985 INFO L93 Difference]: Finished difference Result 353695 states and 584402 transitions. [2023-12-19 07:40:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:40:01,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) Word has length 787 [2023-12-19 07:40:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:40:02,770 INFO L225 Difference]: With dead ends: 353695 [2023-12-19 07:40:02,770 INFO L226 Difference]: Without dead ends: 232835 [2023-12-19 07:40:02,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:40:02,988 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 559 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:40:02,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1564 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:40:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232835 states. [2023-12-19 07:40:21,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232835 to 232805. [2023-12-19 07:40:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232805 states, 180594 states have (on average 1.5761431719769206) internal successors, (284642), 181851 states have internal predecessors, (284642), 49544 states have call successors, (49544), 2666 states have call predecessors, (49544), 2666 states have return successors, (49544), 48287 states have call predecessors, (49544), 49544 states have call successors, (49544) [2023-12-19 07:40:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232805 states to 232805 states and 383730 transitions. [2023-12-19 07:40:23,343 INFO L78 Accepts]: Start accepts. Automaton has 232805 states and 383730 transitions. Word has length 787 [2023-12-19 07:40:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:40:23,343 INFO L495 AbstractCegarLoop]: Abstraction has 232805 states and 383730 transitions. [2023-12-19 07:40:23,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 1 states have call predecessors, (125), 1 states have call successors, (125) [2023-12-19 07:40:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 232805 states and 383730 transitions. [2023-12-19 07:40:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-19 07:40:23,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:40:23,449 INFO L195 NwaCegarLoop]: trace histogram [125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:40:23,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:40:23,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:40:23,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:40:23,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:40:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash 106625984, now seen corresponding path program 1 times [2023-12-19 07:40:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:40:23,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665871191] [2023-12-19 07:40:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:40:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:40:23,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:40:23,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634385029] [2023-12-19 07:40:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:40:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:40:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:40:23,786 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:40:23,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:40:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:40:24,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 07:40:24,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:40:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 8114 proven. 207 refuted. 0 times theorem prover too weak. 22679 trivial. 0 not checked. [2023-12-19 07:40:26,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:40:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 1593 proven. 237 refuted. 0 times theorem prover too weak. 29170 trivial. 0 not checked. [2023-12-19 07:40:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:40:27,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665871191] [2023-12-19 07:40:27,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:40:27,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634385029] [2023-12-19 07:40:27,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634385029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:40:27,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:40:27,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2023-12-19 07:40:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875118623] [2023-12-19 07:40:27,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:40:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 07:40:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:40:27,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 07:40:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=948, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 07:40:27,316 INFO L87 Difference]: Start difference. First operand 232805 states and 383730 transitions. Second operand has 36 states, 34 states have (on average 8.5) internal successors, (289), 32 states have internal predecessors, (289), 11 states have call successors, (143), 6 states have call predecessors, (143), 13 states have return successors, (144), 11 states have call predecessors, (144), 11 states have call successors, (144)