/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:58:21,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:58:21,365 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:58:21,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:58:21,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:58:21,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:58:21,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:58:21,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:58:21,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:58:21,409 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:58:21,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:58:21,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:58:21,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:58:21,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:58:21,411 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:58:21,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:58:21,412 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:58:21,412 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:58:21,412 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:58:21,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:58:21,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:58:21,413 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:58:21,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:58:21,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:58:21,414 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:58:21,414 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:58:21,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:58:21,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:58:21,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:58:21,415 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:58:21,416 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:58:21,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:58:21,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:58:21,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:58:21,417 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:58:21,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:58:21,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:58:21,418 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:58:21,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:58:21,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:58:21,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:58:21,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:58:21,684 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:58:21,685 INFO L431 ainManager$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-33.i [2023-12-16 02:58:22,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:58:23,093 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:58:23,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-33.i [2023-12-16 02:58:23,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af5220ed/b25190bdde7b4824ba1dd5b13c35a889/FLAGff0e7eed7 [2023-12-16 02:58:23,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af5220ed/b25190bdde7b4824ba1dd5b13c35a889 [2023-12-16 02:58:23,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:58:23,120 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:58:23,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:58:23,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:58:23,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:58:23,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385b07d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23, skipping insertion in model container [2023-12-16 02:58:23,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:58:23,330 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-33.i[916,929] [2023-12-16 02:58:23,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:58:23,538 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:58:23,546 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-33.i[916,929] [2023-12-16 02:58:23,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:58:23,673 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:58:23,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23 WrapperNode [2023-12-16 02:58:23,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:58:23,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:58:23,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:58:23,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:58:23,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,784 INFO L138 Inliner]: procedures = 26, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 816 [2023-12-16 02:58:23,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:58:23,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:58:23,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:58:23,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:58:23,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,858 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]. [2023-12-16 02:58:23,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:58:23,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:58:23,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:58:23,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:58:23,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (1/1) ... [2023-12-16 02:58:23,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:58:23,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:23,965 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) [2023-12-16 02:58:23,966 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 [2023-12-16 02:58:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:58:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:58:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:58:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:58:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:58:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:58:24,119 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:58:24,121 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:58:24,964 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:58:25,032 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:58:25,032 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:58:25,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:58:25 BoogieIcfgContainer [2023-12-16 02:58:25,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:58:25,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:58:25,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:58:25,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:58:25,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:58:23" (1/3) ... [2023-12-16 02:58:25,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2d2fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:58:25, skipping insertion in model container [2023-12-16 02:58:25,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:23" (2/3) ... [2023-12-16 02:58:25,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2d2fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:58:25, skipping insertion in model container [2023-12-16 02:58:25,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:58:25" (3/3) ... [2023-12-16 02:58:25,041 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-33.i [2023-12-16 02:58:25,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:58:25,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:58:25,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:58:25,115 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;@121d21f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:58:25,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:58:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 199 states have (on average 1.5276381909547738) internal successors, (304), 200 states have internal predecessors, (304), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-16 02:58:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:25,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:25,158 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:25,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:25,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash -866646113, now seen corresponding path program 1 times [2023-12-16 02:58:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:25,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119904118] [2023-12-16 02:58:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:25,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119904118] [2023-12-16 02:58:25,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:58:25,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037341157] [2023-12-16 02:58:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:25,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:25,629 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) [2023-12-16 02:58:25,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:58:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:26,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:58:26,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 29282 trivial. 0 not checked. [2023-12-16 02:58:26,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:26,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037341157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:26,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:26,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:58:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444818947] [2023-12-16 02:58:26,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:26,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:58:26,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:58:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:58:26,268 INFO L87 Difference]: Start difference. First operand has 324 states, 199 states have (on average 1.5276381909547738) internal successors, (304), 200 states have internal predecessors, (304), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 02:58:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:26,359 INFO L93 Difference]: Finished difference Result 645 states and 1216 transitions. [2023-12-16 02:58:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:58:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) Word has length 764 [2023-12-16 02:58:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:26,372 INFO L225 Difference]: With dead ends: 645 [2023-12-16 02:58:26,373 INFO L226 Difference]: Without dead ends: 322 [2023-12-16 02:58:26,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:58:26,382 INFO L413 NwaCegarLoop]: 539 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, 539 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 [2023-12-16 02:58:26,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 539 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-16 02:58:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-12-16 02:58:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 198 states have (on average 1.505050505050505) internal successors, (298), 198 states have internal predecessors, (298), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-16 02:58:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 542 transitions. [2023-12-16 02:58:26,491 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 542 transitions. Word has length 764 [2023-12-16 02:58:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:26,493 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 542 transitions. [2023-12-16 02:58:26,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 02:58:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 542 transitions. [2023-12-16 02:58:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:26,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:26,515 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:26,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:26,722 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 [2023-12-16 02:58:26,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:26,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1365511195, now seen corresponding path program 1 times [2023-12-16 02:58:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:26,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023118809] [2023-12-16 02:58:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:26,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:26,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245818681] [2023-12-16 02:58:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:26,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:26,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:26,867 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) [2023-12-16 02:58:26,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:58:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:27,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:27,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-16 02:58:27,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:27,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023118809] [2023-12-16 02:58:27,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245818681] [2023-12-16 02:58:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245818681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640917249] [2023-12-16 02:58:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:27,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:27,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:27,462 INFO L87 Difference]: Start difference. First operand 322 states and 542 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:27,582 INFO L93 Difference]: Finished difference Result 791 states and 1332 transitions. [2023-12-16 02:58:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 764 [2023-12-16 02:58:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:27,593 INFO L225 Difference]: With dead ends: 791 [2023-12-16 02:58:27,593 INFO L226 Difference]: Without dead ends: 470 [2023-12-16 02:58:27,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:27,600 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 233 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:27,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1060 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-16 02:58:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 467. [2023-12-16 02:58:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 304 states have (on average 1.5361842105263157) internal successors, (467), 305 states have internal predecessors, (467), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 159 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-16 02:58:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 787 transitions. [2023-12-16 02:58:27,676 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 787 transitions. Word has length 764 [2023-12-16 02:58:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:27,678 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 787 transitions. [2023-12-16 02:58:27,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 787 transitions. [2023-12-16 02:58:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:27,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:27,688 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:27,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:27,897 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 [2023-12-16 02:58:27,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:27,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1973930149, now seen corresponding path program 1 times [2023-12-16 02:58:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:27,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93964335] [2023-12-16 02:58:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:27,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:28,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056988726] [2023-12-16 02:58:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:28,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:28,025 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) [2023-12-16 02:58:28,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:58:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:28,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:28,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-16 02:58:28,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:28,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:28,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93964335] [2023-12-16 02:58:28,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:28,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056988726] [2023-12-16 02:58:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056988726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:28,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825276011] [2023-12-16 02:58:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:28,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:28,602 INFO L87 Difference]: Start difference. First operand 467 states and 787 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:28,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:28,677 INFO L93 Difference]: Finished difference Result 1223 states and 2069 transitions. [2023-12-16 02:58:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:28,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 764 [2023-12-16 02:58:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:28,687 INFO L225 Difference]: With dead ends: 1223 [2023-12-16 02:58:28,687 INFO L226 Difference]: Without dead ends: 757 [2023-12-16 02:58:28,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:28,690 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 219 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:28,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1125 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2023-12-16 02:58:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 753. [2023-12-16 02:58:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 536 states have (on average 1.5895522388059702) internal successors, (852), 539 states have internal predecessors, (852), 212 states have call successors, (212), 4 states have call predecessors, (212), 4 states have return successors, (212), 209 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-16 02:58:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1276 transitions. [2023-12-16 02:58:28,748 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1276 transitions. Word has length 764 [2023-12-16 02:58:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:28,749 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1276 transitions. [2023-12-16 02:58:28,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1276 transitions. [2023-12-16 02:58:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:28,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:28,757 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:28,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 02:58:28,965 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 [2023-12-16 02:58:28,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:28,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1898335321, now seen corresponding path program 1 times [2023-12-16 02:58:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821712497] [2023-12-16 02:58:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:29,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:29,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052751276] [2023-12-16 02:58:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:29,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:29,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:29,060 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) [2023-12-16 02:58:29,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:58:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:29,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:58:29,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-16 02:58:29,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:29,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821712497] [2023-12-16 02:58:29,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052751276] [2023-12-16 02:58:29,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052751276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:29,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:29,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:58:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182706668] [2023-12-16 02:58:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:58:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:58:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:58:29,614 INFO L87 Difference]: Start difference. First operand 753 states and 1276 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:30,303 INFO L93 Difference]: Finished difference Result 2969 states and 4984 transitions. [2023-12-16 02:58:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:58:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 764 [2023-12-16 02:58:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:30,319 INFO L225 Difference]: With dead ends: 2969 [2023-12-16 02:58:30,319 INFO L226 Difference]: Without dead ends: 2217 [2023-12-16 02:58:30,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:58:30,325 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 827 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:30,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1395 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:58:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2023-12-16 02:58:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1460. [2023-12-16 02:58:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1109 states have (on average 1.6311992786293958) internal successors, (1809), 1116 states have internal predecessors, (1809), 342 states have call successors, (342), 8 states have call predecessors, (342), 8 states have return successors, (342), 335 states have call predecessors, (342), 342 states have call successors, (342) [2023-12-16 02:58:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2493 transitions. [2023-12-16 02:58:30,471 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2493 transitions. Word has length 764 [2023-12-16 02:58:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:30,472 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2493 transitions. [2023-12-16 02:58:30,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2493 transitions. [2023-12-16 02:58:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:30,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:30,480 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:30,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:30,690 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 [2023-12-16 02:58:30,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:30,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash 877266967, now seen corresponding path program 1 times [2023-12-16 02:58:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:30,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019728057] [2023-12-16 02:58:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:30,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749355649] [2023-12-16 02:58:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:30,772 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) [2023-12-16 02:58:30,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:58:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:31,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:31,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 13161 proven. 243 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2023-12-16 02:58:31,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 120 proven. 243 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-16 02:58:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019728057] [2023-12-16 02:58:32,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749355649] [2023-12-16 02:58:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749355649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:32,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052863665] [2023-12-16 02:58:32,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:32,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:32,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:32,452 INFO L87 Difference]: Start difference. First operand 1460 states and 2493 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-16 02:58:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:33,060 INFO L93 Difference]: Finished difference Result 2807 states and 4768 transitions. [2023-12-16 02:58:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:58:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) Word has length 764 [2023-12-16 02:58:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:33,069 INFO L225 Difference]: With dead ends: 2807 [2023-12-16 02:58:33,069 INFO L226 Difference]: Without dead ends: 1348 [2023-12-16 02:58:33,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1520 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:33,073 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 447 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:33,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 976 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:58:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2023-12-16 02:58:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1332. [2023-12-16 02:58:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 980 states have (on average 1.6) internal successors, (1568), 987 states have internal predecessors, (1568), 342 states have call successors, (342), 9 states have call predecessors, (342), 9 states have return successors, (342), 335 states have call predecessors, (342), 342 states have call successors, (342) [2023-12-16 02:58:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 2252 transitions. [2023-12-16 02:58:33,180 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 2252 transitions. Word has length 764 [2023-12-16 02:58:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:33,181 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 2252 transitions. [2023-12-16 02:58:33,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-16 02:58:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 2252 transitions. [2023-12-16 02:58:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:33,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:33,189 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:33,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:33,398 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 [2023-12-16 02:58:33,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -551264809, now seen corresponding path program 1 times [2023-12-16 02:58:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312411775] [2023-12-16 02:58:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:33,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:33,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756914786] [2023-12-16 02:58:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:33,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:33,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:33,480 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) [2023-12-16 02:58:33,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:58:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:33,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:33,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-16 02:58:33,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312411775] [2023-12-16 02:58:33,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756914786] [2023-12-16 02:58:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756914786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:33,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:58:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263658227] [2023-12-16 02:58:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:58:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:58:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:58:34,002 INFO L87 Difference]: Start difference. First operand 1332 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:35,411 INFO L93 Difference]: Finished difference Result 5788 states and 9676 transitions. [2023-12-16 02:58:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:58:35,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 764 [2023-12-16 02:58:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:35,442 INFO L225 Difference]: With dead ends: 5788 [2023-12-16 02:58:35,442 INFO L226 Difference]: Without dead ends: 4457 [2023-12-16 02:58:35,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:58:35,449 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 1866 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:35,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 2392 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 02:58:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2023-12-16 02:58:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 2309. [2023-12-16 02:58:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 1739 states have (on average 1.6152961472110408) internal successors, (2809), 1750 states have internal predecessors, (2809), 554 states have call successors, (554), 15 states have call predecessors, (554), 15 states have return successors, (554), 543 states have call predecessors, (554), 554 states have call successors, (554) [2023-12-16 02:58:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3917 transitions. [2023-12-16 02:58:35,756 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3917 transitions. Word has length 764 [2023-12-16 02:58:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:35,757 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3917 transitions. [2023-12-16 02:58:35,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-16 02:58:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3917 transitions. [2023-12-16 02:58:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:35,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:35,766 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:35,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:35,974 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 [2023-12-16 02:58:35,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:35,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1572333163, now seen corresponding path program 1 times [2023-12-16 02:58:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:35,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479006233] [2023-12-16 02:58:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:35,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:36,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390916439] [2023-12-16 02:58:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:36,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:36,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:36,060 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) [2023-12-16 02:58:36,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:58:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:36,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:58:36,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 15482 proven. 195 refuted. 0 times theorem prover too weak. 13847 trivial. 0 not checked. [2023-12-16 02:58:37,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 168 proven. 195 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-16 02:58:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479006233] [2023-12-16 02:58:38,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390916439] [2023-12-16 02:58:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390916439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:38,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:38,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 02:58:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346695643] [2023-12-16 02:58:38,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:38,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 02:58:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:38,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 02:58:38,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:58:38,201 INFO L87 Difference]: Start difference. First operand 2309 states and 3917 transitions. Second operand has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 5 states have call successors, (191), 3 states have call predecessors, (191), 5 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) [2023-12-16 02:58:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:38,940 INFO L93 Difference]: Finished difference Result 4651 states and 7865 transitions. [2023-12-16 02:58:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:58:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 5 states have call successors, (191), 3 states have call predecessors, (191), 5 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) Word has length 764 [2023-12-16 02:58:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:38,952 INFO L225 Difference]: With dead ends: 4651 [2023-12-16 02:58:38,953 INFO L226 Difference]: Without dead ends: 2343 [2023-12-16 02:58:38,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1518 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:58:38,960 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 292 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:38,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 943 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:58:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2023-12-16 02:58:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2317. [2023-12-16 02:58:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1745 states have (on average 1.6097421203438396) internal successors, (2809), 1756 states have internal predecessors, (2809), 554 states have call successors, (554), 17 states have call predecessors, (554), 17 states have return successors, (554), 543 states have call predecessors, (554), 554 states have call successors, (554) [2023-12-16 02:58:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3917 transitions. [2023-12-16 02:58:39,173 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3917 transitions. Word has length 764 [2023-12-16 02:58:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:39,175 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 3917 transitions. [2023-12-16 02:58:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 5 states have call successors, (191), 3 states have call predecessors, (191), 5 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) [2023-12-16 02:58:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3917 transitions. [2023-12-16 02:58:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:39,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:39,185 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:39,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:39,394 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 [2023-12-16 02:58:39,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:39,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1626726061, now seen corresponding path program 1 times [2023-12-16 02:58:39,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:39,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604331804] [2023-12-16 02:58:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:39,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422474307] [2023-12-16 02:58:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:39,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:39,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:39,488 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) [2023-12-16 02:58:39,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:58:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:39,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:39,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 14863 proven. 174 refuted. 0 times theorem prover too weak. 14487 trivial. 0 not checked. [2023-12-16 02:58:40,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 189 proven. 174 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-16 02:58:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604331804] [2023-12-16 02:58:40,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:40,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422474307] [2023-12-16 02:58:40,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422474307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:40,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:40,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:40,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548360998] [2023-12-16 02:58:40,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:40,839 INFO L87 Difference]: Start difference. First operand 2317 states and 3917 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2023-12-16 02:58:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:41,570 INFO L93 Difference]: Finished difference Result 4671 states and 7869 transitions. [2023-12-16 02:58:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:58:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) Word has length 764 [2023-12-16 02:58:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:41,585 INFO L225 Difference]: With dead ends: 4671 [2023-12-16 02:58:41,585 INFO L226 Difference]: Without dead ends: 2355 [2023-12-16 02:58:41,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1520 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:41,592 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 616 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:41,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 965 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:58:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2023-12-16 02:58:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2325. [2023-12-16 02:58:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1751 states have (on average 1.5848086807538548) internal successors, (2775), 1762 states have internal predecessors, (2775), 554 states have call successors, (554), 19 states have call predecessors, (554), 19 states have return successors, (554), 543 states have call predecessors, (554), 554 states have call successors, (554) [2023-12-16 02:58:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3883 transitions. [2023-12-16 02:58:41,783 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3883 transitions. Word has length 764 [2023-12-16 02:58:41,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:41,784 INFO L495 AbstractCegarLoop]: Abstraction has 2325 states and 3883 transitions. [2023-12-16 02:58:41,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2023-12-16 02:58:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3883 transitions. [2023-12-16 02:58:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:41,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:41,801 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:41,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:42,001 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 [2023-12-16 02:58:42,002 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:42,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1915289423, now seen corresponding path program 1 times [2023-12-16 02:58:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:42,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908761514] [2023-12-16 02:58:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:42,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:42,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:42,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284105647] [2023-12-16 02:58:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:42,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:42,077 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) [2023-12-16 02:58:42,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:58:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:42,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:42,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 6693 proven. 45 refuted. 0 times theorem prover too weak. 22786 trivial. 0 not checked. [2023-12-16 02:58:42,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908761514] [2023-12-16 02:58:43,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284105647] [2023-12-16 02:58:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284105647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:58:43,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:58:43,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-16 02:58:43,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421058251] [2023-12-16 02:58:43,180 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:43,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:58:43,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:58:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:58:43,183 INFO L87 Difference]: Start difference. First operand 2325 states and 3883 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 02:58:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:43,828 INFO L93 Difference]: Finished difference Result 4687 states and 7801 transitions. [2023-12-16 02:58:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:58:43,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 764 [2023-12-16 02:58:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:43,841 INFO L225 Difference]: With dead ends: 4687 [2023-12-16 02:58:43,842 INFO L226 Difference]: Without dead ends: 2363 [2023-12-16 02:58:43,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:58:43,850 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 336 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:43,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 954 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:58:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-12-16 02:58:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2333. [2023-12-16 02:58:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2333 states, 1757 states have (on average 1.5737051792828685) internal successors, (2765), 1768 states have internal predecessors, (2765), 554 states have call successors, (554), 21 states have call predecessors, (554), 21 states have return successors, (554), 543 states have call predecessors, (554), 554 states have call successors, (554) [2023-12-16 02:58:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3873 transitions. [2023-12-16 02:58:44,079 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3873 transitions. Word has length 764 [2023-12-16 02:58:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:44,080 INFO L495 AbstractCegarLoop]: Abstraction has 2333 states and 3873 transitions. [2023-12-16 02:58:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 02:58:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3873 transitions. [2023-12-16 02:58:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:44,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:44,089 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:44,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:44,298 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 [2023-12-16 02:58:44,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:44,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1842902865, now seen corresponding path program 1 times [2023-12-16 02:58:44,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:44,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123962686] [2023-12-16 02:58:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:44,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:44,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205285473] [2023-12-16 02:58:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:44,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:44,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:44,367 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) [2023-12-16 02:58:44,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:58:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:44,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:58:44,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 13161 proven. 243 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2023-12-16 02:58:45,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 120 proven. 243 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-16 02:58:45,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:45,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123962686] [2023-12-16 02:58:45,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:45,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205285473] [2023-12-16 02:58:45,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205285473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:45,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:45,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 02:58:45,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938352915] [2023-12-16 02:58:45,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:45,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:58:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:58:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:58:45,938 INFO L87 Difference]: Start difference. First operand 2333 states and 3873 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-16 02:58:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:47,363 INFO L93 Difference]: Finished difference Result 5890 states and 9717 transitions. [2023-12-16 02:58:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 02:58:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) Word has length 764 [2023-12-16 02:58:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:47,382 INFO L225 Difference]: With dead ends: 5890 [2023-12-16 02:58:47,382 INFO L226 Difference]: Without dead ends: 3296 [2023-12-16 02:58:47,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 1519 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-16 02:58:47,390 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1076 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:47,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1809 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 02:58:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2023-12-16 02:58:47,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2477. [2023-12-16 02:58:47,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 1901 states have (on average 1.577590741714887) internal successors, (2999), 1912 states have internal predecessors, (2999), 554 states have call successors, (554), 21 states have call predecessors, (554), 21 states have return successors, (554), 543 states have call predecessors, (554), 554 states have call successors, (554) [2023-12-16 02:58:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4107 transitions. [2023-12-16 02:58:47,664 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4107 transitions. Word has length 764 [2023-12-16 02:58:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:47,665 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 4107 transitions. [2023-12-16 02:58:47,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-16 02:58:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4107 transitions. [2023-12-16 02:58:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-16 02:58:47,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:47,674 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:47,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:47,883 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 [2023-12-16 02:58:47,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:47,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:47,884 INFO L85 PathProgramCache]: Analyzing trace with hash -987095403, now seen corresponding path program 1 times [2023-12-16 02:58:47,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:47,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278408506] [2023-12-16 02:58:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:47,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:47,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855680443] [2023-12-16 02:58:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:47,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:47,944 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) [2023-12-16 02:58:47,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:58:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:48,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 02:58:48,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 02:59:11,336 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:59:11,347 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:59:12,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:12,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown