/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-44.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:41:47,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:41:47,806 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:41:47,808 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:41:47,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:41:47,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:41:47,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:41:47,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:41:47,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:41:47,827 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:41:47,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:41:47,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:41:47,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:41:47,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:41:47,828 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:41:47,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:41:47,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:41:47,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:41:47,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:41:47,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:41:47,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:41:47,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:41:47,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:41:47,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:41:47,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:41:47,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:41:47,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:41:47,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:41:47,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:41:47,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:41:47,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:41:47,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:41:47,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:41:47,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:41:47,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:41:47,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:41:47,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:41:48,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:41:48,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:41:48,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:41:48,066 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:41:48,066 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:41:48,067 INFO L431 ainManager$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-44.i [2023-12-15 19:41:49,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:41:49,215 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:41:49,216 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-44.i [2023-12-15 19:41:49,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1aa2e8a/758a79f7869f4518ade39bbbdcf9a7e9/FLAG65bbcdbb7 [2023-12-15 19:41:49,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1aa2e8a/758a79f7869f4518ade39bbbdcf9a7e9 [2023-12-15 19:41:49,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:41:49,241 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:41:49,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:41:49,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:41:49,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:41:49,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57381d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49, skipping insertion in model container [2023-12-15 19:41:49,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:41:49,374 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-44.i[916,929] [2023-12-15 19:41:49,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:41:49,461 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:41:49,469 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-44.i[916,929] [2023-12-15 19:41:49,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:41:49,514 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:41:49,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49 WrapperNode [2023-12-15 19:41:49,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:41:49,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:41:49,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:41:49,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:41:49,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,559 INFO L138 Inliner]: procedures = 26, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 422 [2023-12-15 19:41:49,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:41:49,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:41:49,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:41:49,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:41:49,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,598 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]. [2023-12-15 19:41:49,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:41:49,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:41:49,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:41:49,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:41:49,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (1/1) ... [2023-12-15 19:41:49,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:41:49,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:41:49,687 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) [2023-12-15 19:41:49,719 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 [2023-12-15 19:41:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:41:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:41:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:41:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:41:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:41:49,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:41:49,801 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:41:49,808 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:41:50,183 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:41:50,226 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:41:50,226 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:41:50,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:41:50 BoogieIcfgContainer [2023-12-15 19:41:50,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:41:50,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:41:50,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:41:50,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:41:50,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:41:49" (1/3) ... [2023-12-15 19:41:50,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302aacef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:41:50, skipping insertion in model container [2023-12-15 19:41:50,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:41:49" (2/3) ... [2023-12-15 19:41:50,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302aacef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:41:50, skipping insertion in model container [2023-12-15 19:41:50,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:41:50" (3/3) ... [2023-12-15 19:41:50,235 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-44.i [2023-12-15 19:41:50,246 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:41:50,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:41:50,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:41:50,279 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;@7a1f3018, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:41:50,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:41:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 91 states have internal predecessors, (128), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-15 19:41:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-15 19:41:50,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:41:50,308 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:41:50,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:41:50,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:41:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash 236318771, now seen corresponding path program 1 times [2023-12-15 19:41:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:41:50,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612748428] [2023-12-15 19:41:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:50,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:41:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:41:50,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:41:50,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612748428] [2023-12-15 19:41:50,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:41:50,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165916889] [2023-12-15 19:41:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:50,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:41:50,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:41:50,561 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) [2023-12-15 19:41:50,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:41:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:41:50,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:41:50,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:41:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2023-12-15 19:41:50,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:41:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165916889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:41:50,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:41:50,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:41:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294040163] [2023-12-15 19:41:50,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:41:50,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:41:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:41:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:41:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:41:50,924 INFO L87 Difference]: Start difference. First operand has 164 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 91 states have internal predecessors, (128), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-15 19:41:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:41:51,009 INFO L93 Difference]: Finished difference Result 325 states and 609 transitions. [2023-12-15 19:41:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:41:51,012 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) Word has length 428 [2023-12-15 19:41:51,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:41:51,018 INFO L225 Difference]: With dead ends: 325 [2023-12-15 19:41:51,018 INFO L226 Difference]: Without dead ends: 162 [2023-12-15 19:41:51,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:41:51,027 INFO L413 NwaCegarLoop]: 262 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, 262 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 [2023-12-15 19:41:51,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:41:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-15 19:41:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-12-15 19:41:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 89 states have internal predecessors, (123), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-15 19:41:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 265 transitions. [2023-12-15 19:41:51,091 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 265 transitions. Word has length 428 [2023-12-15 19:41:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:41:51,093 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 265 transitions. [2023-12-15 19:41:51,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-15 19:41:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 265 transitions. [2023-12-15 19:41:51,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-15 19:41:51,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:41:51,105 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:41:51,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:41:51,311 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 [2023-12-15 19:41:51,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:41:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:41:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1745600397, now seen corresponding path program 1 times [2023-12-15 19:41:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:41:51,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384961353] [2023-12-15 19:41:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:41:51,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:41:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559304601] [2023-12-15 19:41:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:51,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:41:51,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:41:51,417 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) [2023-12-15 19:41:51,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:41:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:41:51,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:41:51,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:41:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5135 proven. 177 refuted. 0 times theorem prover too weak. 4628 trivial. 0 not checked. [2023-12-15 19:41:52,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:41:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 237 proven. 180 refuted. 0 times theorem prover too weak. 9523 trivial. 0 not checked. [2023-12-15 19:41:52,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:41:52,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384961353] [2023-12-15 19:41:52,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:41:52,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559304601] [2023-12-15 19:41:52,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559304601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:41:52,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:41:52,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-15 19:41:52,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037934948] [2023-12-15 19:41:52,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:41:52,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 19:41:52,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:41:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 19:41:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:41:52,824 INFO L87 Difference]: Start difference. First operand 162 states and 265 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 3 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2023-12-15 19:41:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:41:54,365 INFO L93 Difference]: Finished difference Result 739 states and 1189 transitions. [2023-12-15 19:41:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 19:41:54,366 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 3 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 428 [2023-12-15 19:41:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:41:54,370 INFO L225 Difference]: With dead ends: 739 [2023-12-15 19:41:54,370 INFO L226 Difference]: Without dead ends: 578 [2023-12-15 19:41:54,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 842 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=443, Invalid=963, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 19:41:54,373 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1555 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:41:54,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1367 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:41:54,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-15 19:41:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 278. [2023-12-15 19:41:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 166 states have (on average 1.4156626506024097) internal successors, (235), 167 states have internal predecessors, (235), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-15 19:41:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 449 transitions. [2023-12-15 19:41:54,413 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 449 transitions. Word has length 428 [2023-12-15 19:41:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:41:54,414 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 449 transitions. [2023-12-15 19:41:54,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 3 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2023-12-15 19:41:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 449 transitions. [2023-12-15 19:41:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-15 19:41:54,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:41:54,417 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:41:54,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:41:54,623 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 [2023-12-15 19:41:54,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:41:54,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:41:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1526745679, now seen corresponding path program 1 times [2023-12-15 19:41:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:41:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250693189] [2023-12-15 19:41:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:41:54,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:41:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869043534] [2023-12-15 19:41:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:41:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:41:54,698 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) [2023-12-15 19:41:54,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:41:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:41:54,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:41:54,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:41:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5028 proven. 99 refuted. 0 times theorem prover too weak. 4813 trivial. 0 not checked. [2023-12-15 19:41:55,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:41:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 111 proven. 99 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-15 19:41:55,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:41:55,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250693189] [2023-12-15 19:41:55,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:41:55,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869043534] [2023-12-15 19:41:55,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869043534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:41:55,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:41:55,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:41:55,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138015307] [2023-12-15 19:41:55,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:41:55,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:41:55,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:41:55,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:41:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:41:55,297 INFO L87 Difference]: Start difference. First operand 278 states and 449 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-15 19:41:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:41:55,602 INFO L93 Difference]: Finished difference Result 561 states and 896 transitions. [2023-12-15 19:41:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:41:55,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 428 [2023-12-15 19:41:55,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:41:55,606 INFO L225 Difference]: With dead ends: 561 [2023-12-15 19:41:55,606 INFO L226 Difference]: Without dead ends: 280 [2023-12-15 19:41:55,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 848 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:41:55,607 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 308 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:41:55,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 404 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:41:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-15 19:41:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 270. [2023-12-15 19:41:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 157 states have (on average 1.3630573248407643) internal successors, (214), 158 states have internal predecessors, (214), 107 states have call successors, (107), 5 states have call predecessors, (107), 5 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-15 19:41:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 428 transitions. [2023-12-15 19:41:55,632 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 428 transitions. Word has length 428 [2023-12-15 19:41:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:41:55,633 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 428 transitions. [2023-12-15 19:41:55,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-15 19:41:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 428 transitions. [2023-12-15 19:41:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-15 19:41:55,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:41:55,636 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:41:55,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:41:55,841 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 [2023-12-15 19:41:55,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:41:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:41:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1886149007, now seen corresponding path program 1 times [2023-12-15 19:41:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:41:55,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346094286] [2023-12-15 19:41:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:55,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:41:55,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:41:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924632231] [2023-12-15 19:41:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:41:55,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:41:55,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:41:55,892 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) [2023-12-15 19:41:55,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:41:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:41:56,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:41:56,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:41:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5046 proven. 87 refuted. 0 times theorem prover too weak. 4807 trivial. 0 not checked. [2023-12-15 19:41:57,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:42:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 327 proven. 90 refuted. 0 times theorem prover too weak. 9523 trivial. 0 not checked. [2023-12-15 19:42:12,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:42:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346094286] [2023-12-15 19:42:12,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:42:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924632231] [2023-12-15 19:42:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924632231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:42:12,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:42:12,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-15 19:42:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921534860] [2023-12-15 19:42:12,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:42:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 19:42:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:42:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 19:42:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-12-15 19:42:12,667 INFO L87 Difference]: Start difference. First operand 270 states and 428 transitions. Second operand has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) [2023-12-15 19:42:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:42:28,824 INFO L93 Difference]: Finished difference Result 817 states and 1278 transitions. [2023-12-15 19:42:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 19:42:28,834 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) Word has length 428 [2023-12-15 19:42:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:42:28,838 INFO L225 Difference]: With dead ends: 817 [2023-12-15 19:42:28,838 INFO L226 Difference]: Without dead ends: 548 [2023-12-15 19:42:28,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=410, Invalid=922, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 19:42:28,840 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 745 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:42:28,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1112 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-15 19:42:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-15 19:42:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 337. [2023-12-15 19:42:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 189 states have (on average 1.3015873015873016) internal successors, (246), 191 states have internal predecessors, (246), 138 states have call successors, (138), 9 states have call predecessors, (138), 9 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-15 19:42:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 522 transitions. [2023-12-15 19:42:28,886 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 522 transitions. Word has length 428 [2023-12-15 19:42:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:42:28,887 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 522 transitions. [2023-12-15 19:42:28,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) [2023-12-15 19:42:28,887 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 522 transitions. [2023-12-15 19:42:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-15 19:42:28,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:42:28,889 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:42:28,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:42:29,104 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 [2023-12-15 19:42:29,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:42:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:42:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2036999913, now seen corresponding path program 1 times [2023-12-15 19:42:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:42:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18811199] [2023-12-15 19:42:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:29,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:42:29,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:42:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937980279] [2023-12-15 19:42:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:29,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:42:29,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:29,149 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) [2023-12-15 19:42:29,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:42:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:29,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 19:42:29,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:42:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5046 proven. 87 refuted. 0 times theorem prover too weak. 4807 trivial. 0 not checked. [2023-12-15 19:42:30,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:42:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 327 proven. 90 refuted. 0 times theorem prover too weak. 9523 trivial. 0 not checked. [2023-12-15 19:42:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:42:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18811199] [2023-12-15 19:42:47,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:42:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937980279] [2023-12-15 19:42:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937980279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:42:47,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:42:47,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-15 19:42:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697519596] [2023-12-15 19:42:47,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:42:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 19:42:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:42:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 19:42:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2023-12-15 19:42:47,831 INFO L87 Difference]: Start difference. First operand 337 states and 522 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 5 states have call predecessors, (96), 5 states have call successors, (96) Received shutdown request... [2023-12-15 19:43:01,368 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:43:01,368 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 [2023-12-15 19:43:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 19:43:01,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=365, Invalid=967, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 19:43:01,441 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 234 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:43:01,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 346 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-12-15 19:43:01,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:43:01,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:43:01,648 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 [2023-12-15 19:43:01,649 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (337states) and FLOYD_HOARE automaton (currently 22 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (157 states constructed, input type IntersectNwa). [2023-12-15 19:43:01,653 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-15 19:43:01,654 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:43:01,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:43:01 BoogieIcfgContainer [2023-12-15 19:43:01,657 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:43:01,657 INFO L158 Benchmark]: Toolchain (without parser) took 72416.29ms. Allocated memory was 294.6MB in the beginning and 546.3MB in the end (delta: 251.7MB). Free memory was 247.7MB in the beginning and 457.7MB in the end (delta: -210.0MB). Peak memory consumption was 42.8MB. Max. memory is 8.0GB. [2023-12-15 19:43:01,657 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 219.2MB. Free memory is still 166.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:43:01,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.10ms. Allocated memory is still 294.6MB. Free memory was 247.3MB in the beginning and 228.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 19:43:01,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.91ms. Allocated memory is still 294.6MB. Free memory was 228.4MB in the beginning and 223.8MB in the end (delta: 4.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 19:43:01,658 INFO L158 Benchmark]: Boogie Preprocessor took 74.14ms. Allocated memory is still 294.6MB. Free memory was 223.8MB in the beginning and 219.0MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 19:43:01,658 INFO L158 Benchmark]: RCFGBuilder took 578.78ms. Allocated memory is still 294.6MB. Free memory was 218.9MB in the beginning and 241.3MB in the end (delta: -22.4MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. [2023-12-15 19:43:01,659 INFO L158 Benchmark]: TraceAbstraction took 71428.58ms. Allocated memory was 294.6MB in the beginning and 546.3MB in the end (delta: 251.7MB). Free memory was 240.8MB in the beginning and 457.7MB in the end (delta: -216.9MB). Peak memory consumption was 35.3MB. Max. memory is 8.0GB. [2023-12-15 19:43:01,660 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 219.2MB. Free memory is still 166.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.10ms. Allocated memory is still 294.6MB. Free memory was 247.3MB in the beginning and 228.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.91ms. Allocated memory is still 294.6MB. Free memory was 228.4MB in the beginning and 223.8MB in the end (delta: 4.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.14ms. Allocated memory is still 294.6MB. Free memory was 223.8MB in the beginning and 219.0MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 578.78ms. Allocated memory is still 294.6MB. Free memory was 218.9MB in the beginning and 241.3MB in the end (delta: -22.4MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. * TraceAbstraction took 71428.58ms. Allocated memory was 294.6MB in the beginning and 546.3MB in the end (delta: 251.7MB). Free memory was 240.8MB in the beginning and 457.7MB in the end (delta: -216.9MB). Peak memory consumption was 35.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (337states) and FLOYD_HOARE automaton (currently 22 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (157 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 164 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.4s, OverallIterations: 5, TraceHistogramMax: 71, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 31.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3012 SdHoareTripleChecker+Valid, 25.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2842 mSDsluCounter, 3491 SdHoareTripleChecker+Invalid, 24.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2470 mSDsCounter, 1710 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4485 IncrementalHoareTripleChecker+Invalid, 6195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1710 mSolverCounterUnsat, 1021 mSDtfsCounter, 4485 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3913 GetRequests, 3794 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=4, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 521 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 36.8s InterpolantComputationTime, 2569 NumberOfCodeBlocks, 2569 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 3845 ConstructedInterpolants, 0 QuantifiedInterpolants, 14561 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4733 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 88551/89460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown