/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_fillercodestructure_filler-pe-cn_file-31.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:11:08,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:11:09,023 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 20:11:09,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:11:09,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:11:09,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:11:09,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:11:09,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:11:09,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:11:09,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:11:09,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:11:09,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:11:09,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:11:09,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:11:09,050 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:11:09,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:11:09,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:11:09,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:11:09,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:11:09,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:11:09,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:11:09,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:11:09,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:11:09,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:11:09,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:11:09,052 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:11:09,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:11:09,052 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:11:09,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:11:09,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:11:09,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:11:09,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:11:09,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:11:09,054 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:11:09,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:11:09,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:11:09,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:11:09,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:11:09,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:11:09,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:11:09,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:11:09,236 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:11:09,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i [2023-12-15 20:11:10,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:11:10,458 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:11:10,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i [2023-12-15 20:11:10,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69ebd5ea/551de73fb892477e962f946149e3321d/FLAG007eaf6bd [2023-12-15 20:11:10,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69ebd5ea/551de73fb892477e962f946149e3321d [2023-12-15 20:11:10,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:11:10,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:11:10,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:11:10,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:11:10,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:11:10,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a88d152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10, skipping insertion in model container [2023-12-15 20:11:10,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,529 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:11:10,638 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_fillercodestructure_filler-pe-cn_file-31.i[919,932] [2023-12-15 20:11:10,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:11:10,714 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:11:10,721 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_fillercodestructure_filler-pe-cn_file-31.i[919,932] [2023-12-15 20:11:10,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:11:10,801 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:11:10,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10 WrapperNode [2023-12-15 20:11:10,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:11:10,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:11:10,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:11:10,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:11:10,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,846 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 289 [2023-12-15 20:11:10,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:11:10,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:11:10,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:11:10,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:11:10,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,898 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 20:11:10,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:11:10,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:11:10,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:11:10,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:11:10,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (1/1) ... [2023-12-15 20:11:10,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:11:10,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:11:10,956 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 20:11:10,974 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 20:11:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:11:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:11:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:11:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:11:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:11:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:11:11,077 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:11:11,078 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:11:11,479 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:11:11,502 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:11:11,503 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:11:11,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:11:11 BoogieIcfgContainer [2023-12-15 20:11:11,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:11:11,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:11:11,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:11:11,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:11:11,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:11:10" (1/3) ... [2023-12-15 20:11:11,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8d6d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:11:11, skipping insertion in model container [2023-12-15 20:11:11,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:11:10" (2/3) ... [2023-12-15 20:11:11,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8d6d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:11:11, skipping insertion in model container [2023-12-15 20:11:11,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:11:11" (3/3) ... [2023-12-15 20:11:11,512 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i [2023-12-15 20:11:11,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:11:11,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:11:11,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:11:11,569 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;@a3dd27d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:11:11,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:11:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 66 states have internal predecessors, (92), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 20:11:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-15 20:11:11,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:11:11,592 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:11,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:11:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:11:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1941317115, now seen corresponding path program 1 times [2023-12-15 20:11:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:11:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637709593] [2023-12-15 20:11:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:11:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:11:11,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:11:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992169275] [2023-12-15 20:11:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:11:11,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:11:11,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:11:11,780 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 20:11:11,809 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 20:11:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:11:12,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:11:12,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:11:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2345 proven. 33 refuted. 0 times theorem prover too weak. 3346 trivial. 0 not checked. [2023-12-15 20:11:12,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:11:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-12-15 20:11:13,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:11:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637709593] [2023-12-15 20:11:13,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:11:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992169275] [2023-12-15 20:11:13,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992169275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:11:13,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:11:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-15 20:11:13,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449440783] [2023-12-15 20:11:13,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:11:13,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 20:11:13,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:11:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 20:11:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:11:13,472 INFO L87 Difference]: Start difference. First operand has 122 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 66 states have internal predecessors, (92), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 6 states have call successors, (108), 4 states have call predecessors, (108), 6 states have return successors, (108), 6 states have call predecessors, (108), 6 states have call successors, (108) [2023-12-15 20:11:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:11:14,656 INFO L93 Difference]: Finished difference Result 598 states and 1210 transitions. [2023-12-15 20:11:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 20:11:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 6 states have call successors, (108), 4 states have call predecessors, (108), 6 states have return successors, (108), 6 states have call predecessors, (108), 6 states have call successors, (108) Word has length 319 [2023-12-15 20:11:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:11:14,676 INFO L225 Difference]: With dead ends: 598 [2023-12-15 20:11:14,676 INFO L226 Difference]: Without dead ends: 477 [2023-12-15 20:11:14,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=257, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:11:14,685 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 427 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 20:11:14,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 665 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 20:11:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-15 20:11:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 315. [2023-12-15 20:11:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 162 states have (on average 1.3024691358024691) internal successors, (211), 163 states have internal predecessors, (211), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 147 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-15 20:11:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 507 transitions. [2023-12-15 20:11:14,811 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 507 transitions. Word has length 319 [2023-12-15 20:11:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:11:14,813 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 507 transitions. [2023-12-15 20:11:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 6 states have call successors, (108), 4 states have call predecessors, (108), 6 states have return successors, (108), 6 states have call predecessors, (108), 6 states have call successors, (108) [2023-12-15 20:11:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 507 transitions. [2023-12-15 20:11:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-15 20:11:14,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:11:14,823 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:14,847 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 20:11:15,029 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 20:11:15,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:11:15,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:11:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1884058813, now seen corresponding path program 1 times [2023-12-15 20:11:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:11:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131508479] [2023-12-15 20:11:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:11:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:11:15,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:11:15,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694618557] [2023-12-15 20:11:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:11:15,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:11:15,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:11:15,092 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 20:11:15,095 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 20:11:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:11:15,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 20:11:15,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:12:06,747 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:12:06,747 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 20:12:07,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 20:12:07,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown