/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:22:26,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:22:26,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:22:26,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:22:26,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:22:27,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:22:27,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:22:27,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:22:27,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:22:27,008 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:22:27,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:22:27,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:22:27,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:22:27,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:22:27,011 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:22:27,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:22:27,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:22:27,012 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:22:27,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:22:27,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:22:27,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:22:27,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:22:27,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:22:27,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:22:27,013 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:22:27,014 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:22:27,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:22:27,014 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:22:27,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:22:27,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:22:27,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:22:27,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:22:27,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:22:27,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:22:27,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:22:27,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:22:27,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:22:27,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:22:27,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:22:27,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:22:27,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:22:27,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:22:27,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:22:27,018 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:22:27,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:22:27,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:22:27,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:22:27,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:22:27,287 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:22:27,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-12-19 06:22:28,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:22:28,720 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:22:28,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-12-19 06:22:28,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c912974/5a3b8d92168f43ff9e2c72afbba97ffe/FLAGc60e26ca3 [2023-12-19 06:22:28,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c912974/5a3b8d92168f43ff9e2c72afbba97ffe [2023-12-19 06:22:28,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:22:28,750 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:22:28,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:22:28,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:22:28,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:22:28,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:22:28" (1/1) ... [2023-12-19 06:22:28,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df380b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:28, skipping insertion in model container [2023-12-19 06:22:28,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:22:28" (1/1) ... [2023-12-19 06:22:28,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:22:28,929 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-100_file-56.i[916,929] [2023-12-19 06:22:29,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:22:29,026 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:22:29,035 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-100_file-56.i[916,929] [2023-12-19 06:22:29,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:22:29,117 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:22:29,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29 WrapperNode [2023-12-19 06:22:29,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:22:29,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:22:29,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:22:29,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:22:29,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,201 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 329 [2023-12-19 06:22:29,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:22:29,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:22:29,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:22:29,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:22:29,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,242 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,285 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:22:29,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:22:29,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:22:29,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:22:29,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:22:29,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (1/1) ... [2023-12-19 06:22:29,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:22:29,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:29,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 06:22:29,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 06:22:29,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:22:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:22:29,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:22:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:22:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:22:29,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:22:29,518 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:22:29,520 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:22:29,949 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:22:30,002 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:22:30,002 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:22:30,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:22:30 BoogieIcfgContainer [2023-12-19 06:22:30,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:22:30,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:22:30,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:22:30,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:22:30,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:22:28" (1/3) ... [2023-12-19 06:22:30,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b0df87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:22:30, skipping insertion in model container [2023-12-19 06:22:30,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:22:29" (2/3) ... [2023-12-19 06:22:30,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b0df87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:22:30, skipping insertion in model container [2023-12-19 06:22:30,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:22:30" (3/3) ... [2023-12-19 06:22:30,011 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-12-19 06:22:30,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:22:30,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:22:30,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:22:30,086 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;@3488e85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:22:30,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:22:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 73 states have (on average 1.4657534246575343) internal successors, (107), 74 states have internal predecessors, (107), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-19 06:22:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-19 06:22:30,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:30,137 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:30,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:30,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 964360984, now seen corresponding path program 1 times [2023-12-19 06:22:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640530858] [2023-12-19 06:22:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:30,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:22:30,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640530858] [2023-12-19 06:22:30,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:22:30,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646747892] [2023-12-19 06:22:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:30,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:30,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:30,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:22:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:30,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:22:30,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:22:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-12-19 06:22:30,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:22:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646747892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:22:30,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:22:30,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:22:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591157841] [2023-12-19 06:22:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:22:30,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:22:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:22:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:22:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:22:30,896 INFO L87 Difference]: Start difference. First operand has 133 states, 73 states have (on average 1.4657534246575343) internal successors, (107), 74 states have internal predecessors, (107), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-19 06:22:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:22:30,973 INFO L93 Difference]: Finished difference Result 263 states and 497 transitions. [2023-12-19 06:22:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:22:30,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 344 [2023-12-19 06:22:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:22:30,985 INFO L225 Difference]: With dead ends: 263 [2023-12-19 06:22:30,985 INFO L226 Difference]: Without dead ends: 131 [2023-12-19 06:22:30,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:22:30,993 INFO L413 NwaCegarLoop]: 213 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, 213 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:22:30,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:22:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-19 06:22:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-12-19 06:22:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 72 states have internal predecessors, (102), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-19 06:22:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 216 transitions. [2023-12-19 06:22:31,059 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 216 transitions. Word has length 344 [2023-12-19 06:22:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:22:31,060 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 216 transitions. [2023-12-19 06:22:31,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-19 06:22:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 216 transitions. [2023-12-19 06:22:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-19 06:22:31,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:31,067 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:31,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 06:22:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:22:31,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:31,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash 30875794, now seen corresponding path program 1 times [2023-12-19 06:22:31,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:31,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577404121] [2023-12-19 06:22:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:31,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:22:31,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018010673] [2023-12-19 06:22:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:31,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:31,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:31,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:31,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:22:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:31,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:22:31,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:22:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-19 06:22:31,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:22:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:22:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577404121] [2023-12-19 06:22:31,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:22:31,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018010673] [2023-12-19 06:22:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018010673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:22:31,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:22:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:22:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094193969] [2023-12-19 06:22:31,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:22:31,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:22:31,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:22:31,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:22:31,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:22:31,713 INFO L87 Difference]: Start difference. First operand 131 states and 216 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-19 06:22:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:22:31,803 INFO L93 Difference]: Finished difference Result 352 states and 579 transitions. [2023-12-19 06:22:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:22:31,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 344 [2023-12-19 06:22:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:22:31,810 INFO L225 Difference]: With dead ends: 352 [2023-12-19 06:22:31,810 INFO L226 Difference]: Without dead ends: 222 [2023-12-19 06:22:31,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:22:31,814 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 142 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:22:31,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 506 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:22:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-19 06:22:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2023-12-19 06:22:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 121 states have (on average 1.4049586776859504) internal successors, (170), 122 states have internal predecessors, (170), 95 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-19 06:22:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 360 transitions. [2023-12-19 06:22:31,867 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 360 transitions. Word has length 344 [2023-12-19 06:22:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:22:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 360 transitions. [2023-12-19 06:22:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-19 06:22:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 360 transitions. [2023-12-19 06:22:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-19 06:22:31,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:31,876 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:31,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:22:32,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:22:32,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:32,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 554373738, now seen corresponding path program 1 times [2023-12-19 06:22:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020856674] [2023-12-19 06:22:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:32,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:22:32,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300414663] [2023-12-19 06:22:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:32,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:32,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:32,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:22:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:32,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:22:32,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:22:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 896 proven. 156 refuted. 0 times theorem prover too weak. 5332 trivial. 0 not checked. [2023-12-19 06:22:32,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:22:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 12 proven. 156 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-19 06:22:33,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:22:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020856674] [2023-12-19 06:22:33,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:22:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300414663] [2023-12-19 06:22:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300414663] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:22:33,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:22:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:22:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051313563] [2023-12-19 06:22:33,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:22:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:22:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:22:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:22:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:22:33,201 INFO L87 Difference]: Start difference. First operand 219 states and 360 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-19 06:22:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:22:33,534 INFO L93 Difference]: Finished difference Result 449 states and 729 transitions. [2023-12-19 06:22:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:22:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 345 [2023-12-19 06:22:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:22:33,538 INFO L225 Difference]: With dead ends: 449 [2023-12-19 06:22:33,539 INFO L226 Difference]: Without dead ends: 231 [2023-12-19 06:22:33,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 682 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:22:33,541 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 104 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:22:33,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 337 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:22:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-19 06:22:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2023-12-19 06:22:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 127 states have (on average 1.3700787401574803) internal successors, (174), 128 states have internal predecessors, (174), 95 states have call successors, (95), 4 states have call predecessors, (95), 4 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-19 06:22:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 364 transitions. [2023-12-19 06:22:33,571 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 364 transitions. Word has length 345 [2023-12-19 06:22:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:22:33,572 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 364 transitions. [2023-12-19 06:22:33,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-19 06:22:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 364 transitions. [2023-12-19 06:22:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-19 06:22:33,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:33,578 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:33,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:22:33,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:33,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:33,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1220633624, now seen corresponding path program 1 times [2023-12-19 06:22:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:33,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090024566] [2023-12-19 06:22:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:33,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:22:33,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561591587] [2023-12-19 06:22:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:33,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:33,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:33,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:22:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:34,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 06:22:34,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:22:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1742 proven. 36 refuted. 0 times theorem prover too weak. 4606 trivial. 0 not checked. [2023-12-19 06:22:34,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:22:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 294 proven. 39 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-12-19 06:22:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:22:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090024566] [2023-12-19 06:22:34,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:22:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561591587] [2023-12-19 06:22:34,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561591587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:22:34,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:22:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-19 06:22:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859718936] [2023-12-19 06:22:34,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:22:34,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 06:22:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:22:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 06:22:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 06:22:34,526 INFO L87 Difference]: Start difference. First operand 227 states and 364 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:22:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:22:35,136 INFO L93 Difference]: Finished difference Result 465 states and 736 transitions. [2023-12-19 06:22:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:22:35,137 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 345 [2023-12-19 06:22:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:22:35,143 INFO L225 Difference]: With dead ends: 465 [2023-12-19 06:22:35,143 INFO L226 Difference]: Without dead ends: 239 [2023-12-19 06:22:35,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:22:35,146 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 359 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:22:35,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 572 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:22:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-19 06:22:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2023-12-19 06:22:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 131 states have (on average 1.3358778625954197) internal successors, (175), 132 states have internal predecessors, (175), 95 states have call successors, (95), 6 states have call predecessors, (95), 6 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-19 06:22:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 365 transitions. [2023-12-19 06:22:35,190 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 365 transitions. Word has length 345 [2023-12-19 06:22:35,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:22:35,192 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 365 transitions. [2023-12-19 06:22:35,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:22:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 365 transitions. [2023-12-19 06:22:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-19 06:22:35,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:35,197 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:35,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:22:35,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:35,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:35,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash -533007198, now seen corresponding path program 1 times [2023-12-19 06:22:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:35,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640127937] [2023-12-19 06:22:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:35,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:35,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:22:35,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293734163] [2023-12-19 06:22:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:35,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:35,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:35,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:35,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:22:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:35,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 06:22:35,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:22:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-19 06:22:35,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:22:35,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:22:35,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640127937] [2023-12-19 06:22:35,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:22:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293734163] [2023-12-19 06:22:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293734163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:22:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:22:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:22:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973227302] [2023-12-19 06:22:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:22:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:22:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:22:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:22:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:22:35,751 INFO L87 Difference]: Start difference. First operand 233 states and 365 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-19 06:22:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:22:35,828 INFO L93 Difference]: Finished difference Result 519 states and 802 transitions. [2023-12-19 06:22:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 06:22:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 345 [2023-12-19 06:22:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:22:35,831 INFO L225 Difference]: With dead ends: 519 [2023-12-19 06:22:35,831 INFO L226 Difference]: Without dead ends: 281 [2023-12-19 06:22:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:22:35,832 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 68 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:22:35,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 789 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:22:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-19 06:22:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 277. [2023-12-19 06:22:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 165 states have (on average 1.3272727272727274) internal successors, (219), 168 states have internal predecessors, (219), 103 states have call successors, (103), 8 states have call predecessors, (103), 8 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-19 06:22:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 425 transitions. [2023-12-19 06:22:35,864 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 425 transitions. Word has length 345 [2023-12-19 06:22:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:22:35,865 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 425 transitions. [2023-12-19 06:22:35,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-19 06:22:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 425 transitions. [2023-12-19 06:22:35,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-19 06:22:35,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:35,872 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:35,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:22:36,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:36,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:36,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash -926034208, now seen corresponding path program 1 times [2023-12-19 06:22:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268418393] [2023-12-19 06:22:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:36,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:36,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:22:36,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954378457] [2023-12-19 06:22:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:36,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:36,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:36,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:36,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:22:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:36,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:22:36,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:22:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2942 proven. 57 refuted. 0 times theorem prover too weak. 3385 trivial. 0 not checked. [2023-12-19 06:22:36,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:22:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 111 proven. 57 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-19 06:22:37,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:22:37,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268418393] [2023-12-19 06:22:37,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:22:37,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954378457] [2023-12-19 06:22:37,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954378457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:22:37,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:22:37,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2023-12-19 06:22:37,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014238163] [2023-12-19 06:22:37,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:22:37,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:22:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:22:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:22:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 06:22:37,671 INFO L87 Difference]: Start difference. First operand 277 states and 425 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-12-19 06:22:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:22:39,176 INFO L93 Difference]: Finished difference Result 1161 states and 1775 transitions. [2023-12-19 06:22:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 06:22:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 345 [2023-12-19 06:22:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:22:39,182 INFO L225 Difference]: With dead ends: 1161 [2023-12-19 06:22:39,183 INFO L226 Difference]: Without dead ends: 885 [2023-12-19 06:22:39,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2023-12-19 06:22:39,185 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 710 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:22:39,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1046 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 06:22:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-19 06:22:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 656. [2023-12-19 06:22:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 391 states have (on average 1.3171355498721227) internal successors, (515), 399 states have internal predecessors, (515), 244 states have call successors, (244), 20 states have call predecessors, (244), 20 states have return successors, (244), 236 states have call predecessors, (244), 244 states have call successors, (244) [2023-12-19 06:22:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1003 transitions. [2023-12-19 06:22:39,311 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1003 transitions. Word has length 345 [2023-12-19 06:22:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:22:39,313 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1003 transitions. [2023-12-19 06:22:39,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-12-19 06:22:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1003 transitions. [2023-12-19 06:22:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-19 06:22:39,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:22:39,319 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:22:39,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:22:39,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:39,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:22:39,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:22:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1374788382, now seen corresponding path program 1 times [2023-12-19 06:22:39,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:22:39,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849449627] [2023-12-19 06:22:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:39,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:22:39,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:22:39,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814814498] [2023-12-19 06:22:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:22:39,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:22:39,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:22:39,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:22:39,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:22:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:22:39,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-19 06:22:39,880 INFO L285 TraceCheckSpWp]: Computing forward predicates...