/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:36:58,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:36:58,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:36:58,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:36:58,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:36:58,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:36:58,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:36:58,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:36:58,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:36:58,330 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:36:58,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:36:58,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:36:58,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:36:58,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:36:58,332 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:36:58,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:36:58,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:36:58,332 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:36:58,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:36:58,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:36:58,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:36:58,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:36:58,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:36:58,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:36:58,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:36:58,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:36:58,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:36:58,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:36:58,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:36:58,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:36:58,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:36:58,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:36:58,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:36:58,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:36:58,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:36:58,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:36:58,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:36:58,337 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:36:58,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:36:58,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:36:58,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:36:58,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:36:58,524 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:36:58,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i [2023-12-20 22:36:59,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:36:59,607 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:36:59,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i [2023-12-20 22:36:59,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4800c0a/77346d144edc43a4b5caaed63004e369/FLAGf8a092ec0 [2023-12-20 22:36:59,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4800c0a/77346d144edc43a4b5caaed63004e369 [2023-12-20 22:36:59,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:36:59,629 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:36:59,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:36:59,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:36:59,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:36:59,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558ee92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59, skipping insertion in model container [2023-12-20 22:36:59,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:36:59,756 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_loopvsstraightlinecode_100-1loop_file-68.i[916,929] [2023-12-20 22:36:59,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:36:59,838 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:36:59,846 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_loopvsstraightlinecode_100-1loop_file-68.i[916,929] [2023-12-20 22:36:59,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:36:59,897 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:36:59,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59 WrapperNode [2023-12-20 22:36:59,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:36:59,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:36:59,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:36:59,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:36:59,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,954 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 286 [2023-12-20 22:36:59,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:36:59,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:36:59,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:36:59,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:36:59,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,982 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]. [2023-12-20 22:36:59,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:36:59,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:37:00,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:37:00,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:37:00,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:37:00,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:37:00,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:37:00,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:37:00,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:37:00,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:37:00,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (1/1) ... [2023-12-20 22:37:00,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:37:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:37:00,049 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) [2023-12-20 22:37:00,059 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 [2023-12-20 22:37:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:37:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:37:00,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:37:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:37:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:37:00,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:37:00,183 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:37:00,185 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:37:00,500 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:37:00,561 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:37:00,561 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:37:00,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:37:00 BoogieIcfgContainer [2023-12-20 22:37:00,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:37:00,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:37:00,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:37:00,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:37:00,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:36:59" (1/3) ... [2023-12-20 22:37:00,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357478da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:37:00, skipping insertion in model container [2023-12-20 22:37:00,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:36:59" (2/3) ... [2023-12-20 22:37:00,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357478da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:37:00, skipping insertion in model container [2023-12-20 22:37:00,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:37:00" (3/3) ... [2023-12-20 22:37:00,569 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-68.i [2023-12-20 22:37:00,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:37:00,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:37:00,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:37:00,629 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;@6dbc29cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:37:00,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:37:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 63 states have internal predecessors, (86), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-20 22:37:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 22:37:00,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:37:00,647 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:37:00,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:37:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:37:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash -334879145, now seen corresponding path program 1 times [2023-12-20 22:37:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:37:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218945814] [2023-12-20 22:37:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:37:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:37:00,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:37:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218945814] [2023-12-20 22:37:00,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 22:37:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955660462] [2023-12-20 22:37:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:00,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:37:00,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:37:00,858 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) [2023-12-20 22:37:00,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:37:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:37:01,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 22:37:01,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:37:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-12-20 22:37:01,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:37:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955660462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:37:01,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:37:01,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:37:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022126734] [2023-12-20 22:37:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:37:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:37:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:37:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:37:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:37:01,149 INFO L87 Difference]: Start difference. First operand has 105 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 63 states have internal predecessors, (86), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-20 22:37:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:37:01,195 INFO L93 Difference]: Finished difference Result 209 states and 371 transitions. [2023-12-20 22:37:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:37:01,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 253 [2023-12-20 22:37:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:37:01,203 INFO L225 Difference]: With dead ends: 209 [2023-12-20 22:37:01,203 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 22:37:01,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:37:01,209 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:37:01,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:37:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 22:37:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-20 22:37:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 61 states have internal predecessors, (81), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-20 22:37:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 161 transitions. [2023-12-20 22:37:01,264 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 161 transitions. Word has length 253 [2023-12-20 22:37:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:37:01,265 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 161 transitions. [2023-12-20 22:37:01,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-20 22:37:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 161 transitions. [2023-12-20 22:37:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 22:37:01,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:37:01,274 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:37:01,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 22:37:01,475 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 [2023-12-20 22:37:01,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:37:01,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:37:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash -529224293, now seen corresponding path program 1 times [2023-12-20 22:37:01,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:37:01,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486031633] [2023-12-20 22:37:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:01,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:37:01,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:37:01,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985832409] [2023-12-20 22:37:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:01,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:37:01,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:37:01,531 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) [2023-12-20 22:37:01,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 22:37:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:37:01,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 22:37:01,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:37:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-20 22:37:01,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:37:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:37:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486031633] [2023-12-20 22:37:01,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:37:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985832409] [2023-12-20 22:37:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985832409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:37:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:37:01,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 22:37:01,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441107970] [2023-12-20 22:37:01,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:37:01,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 22:37:01,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:37:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 22:37:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 22:37:01,737 INFO L87 Difference]: Start difference. First operand 103 states and 161 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-20 22:37:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:37:01,799 INFO L93 Difference]: Finished difference Result 209 states and 326 transitions. [2023-12-20 22:37:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 22:37:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 253 [2023-12-20 22:37:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:37:01,802 INFO L225 Difference]: With dead ends: 209 [2023-12-20 22:37:01,802 INFO L226 Difference]: Without dead ends: 107 [2023-12-20 22:37:01,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 22:37:01,806 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:37:01,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 461 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:37:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-20 22:37:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2023-12-20 22:37:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 63 states have internal predecessors, (83), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-20 22:37:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2023-12-20 22:37:01,815 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 253 [2023-12-20 22:37:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:37:01,819 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2023-12-20 22:37:01,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-20 22:37:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2023-12-20 22:37:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 22:37:01,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:37:01,821 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:37:01,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 22:37:02,026 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 [2023-12-20 22:37:02,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:37:02,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:37:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash -529164711, now seen corresponding path program 1 times [2023-12-20 22:37:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:37:02,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447439919] [2023-12-20 22:37:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:02,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:37:02,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:37:02,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886040392] [2023-12-20 22:37:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:02,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:37:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:37:02,064 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) [2023-12-20 22:37:02,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 22:37:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:37:02,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 22:37:02,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:37:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-20 22:37:02,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:37:02,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:37:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447439919] [2023-12-20 22:37:02,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:37:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886040392] [2023-12-20 22:37:02,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886040392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:37:02,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:37:02,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:37:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800988682] [2023-12-20 22:37:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:37:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:37:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:37:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:37:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:37:02,250 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-20 22:37:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:37:02,291 INFO L93 Difference]: Finished difference Result 209 states and 325 transitions. [2023-12-20 22:37:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:37:02,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 253 [2023-12-20 22:37:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:37:02,297 INFO L225 Difference]: With dead ends: 209 [2023-12-20 22:37:02,297 INFO L226 Difference]: Without dead ends: 105 [2023-12-20 22:37:02,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:37:02,299 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 31 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:37:02,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 277 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:37:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-20 22:37:02,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-20 22:37:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 63 states have internal predecessors, (82), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-20 22:37:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2023-12-20 22:37:02,311 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 253 [2023-12-20 22:37:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:37:02,312 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2023-12-20 22:37:02,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-20 22:37:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2023-12-20 22:37:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 22:37:02,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:37:02,314 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:37:02,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 22:37:02,521 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 [2023-12-20 22:37:02,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:37:02,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:37:02,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1960364251, now seen corresponding path program 1 times [2023-12-20 22:37:02,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:37:02,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761621615] [2023-12-20 22:37:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:02,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:37:02,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:37:02,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118968477] [2023-12-20 22:37:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:02,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:37:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:37:02,582 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) [2023-12-20 22:37:02,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 22:37:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:37:02,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 22:37:02,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:37:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1219 proven. 87 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2023-12-20 22:37:02,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:37:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2023-12-20 22:37:03,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:37:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761621615] [2023-12-20 22:37:03,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:37:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118968477] [2023-12-20 22:37:03,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118968477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 22:37:03,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 22:37:03,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-20 22:37:03,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066436803] [2023-12-20 22:37:03,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 22:37:03,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 22:37:03,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:37:03,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 22:37:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 22:37:03,166 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-20 22:37:03,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:37:03,547 INFO L93 Difference]: Finished difference Result 329 states and 498 transitions. [2023-12-20 22:37:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 22:37:03,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 253 [2023-12-20 22:37:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:37:03,550 INFO L225 Difference]: With dead ends: 329 [2023-12-20 22:37:03,550 INFO L226 Difference]: Without dead ends: 225 [2023-12-20 22:37:03,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 497 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-20 22:37:03,554 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 349 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:37:03,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 362 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 22:37:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-20 22:37:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2023-12-20 22:37:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 130 states have (on average 1.2846153846153847) internal successors, (167), 130 states have internal predecessors, (167), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-20 22:37:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 327 transitions. [2023-12-20 22:37:03,589 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 327 transitions. Word has length 253 [2023-12-20 22:37:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:37:03,590 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 327 transitions. [2023-12-20 22:37:03,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-20 22:37:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 327 transitions. [2023-12-20 22:37:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 22:37:03,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:37:03,592 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:37:03,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 22:37:03,798 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 [2023-12-20 22:37:03,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:37:03,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:37:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1567337241, now seen corresponding path program 1 times [2023-12-20 22:37:03,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:37:03,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779407108] [2023-12-20 22:37:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:03,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:37:03,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:37:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379439888] [2023-12-20 22:37:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:37:03,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:37:03,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:37:03,845 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) [2023-12-20 22:37:03,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 22:37:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:37:04,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 22:37:04,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:37:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2195 proven. 306 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-12-20 22:37:10,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:37:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:37:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779407108] [2023-12-20 22:37:17,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:37:17,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379439888] [2023-12-20 22:37:17,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379439888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 22:37:17,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:37:17,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-12-20 22:37:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569835282] [2023-12-20 22:37:17,892 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 22:37:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 22:37:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:37:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 22:37:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=865, Unknown=1, NotChecked=0, Total=1122 [2023-12-20 22:37:17,894 INFO L87 Difference]: Start difference. First operand 215 states and 327 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 10 states have call successors, (40), 10 states have call predecessors, (40), 13 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-20 22:37:25,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:37:29,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:37:37,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:37:45,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:37:50,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:37:54,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:37:58,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:02,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:06,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:10,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:11,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:15,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:23,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:27,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:31,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:35,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:39,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:43,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:48,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:52,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:38:56,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:00,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:06,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:10,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:14,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:18,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:22,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:26,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:30,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:34,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:38,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:42,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:46,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:50,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:54,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:39:58,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:02,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:06,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:10,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:14,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:18,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:22,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:26,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:30,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:34,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:38,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:42,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:46,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:50,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-20 22:40:52,749 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-20 22:40:52,750 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 101 [2023-12-20 22:40:52,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=1044, Invalid=3245, Unknown=1, NotChecked=0, Total=4290 [2023-12-20 22:40:52,752 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 126 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 181 mSolverCounterUnsat, 48 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 48 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.6s IncrementalHoareTripleChecker+Time [2023-12-20 22:40:52,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 323 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 688 Invalid, 48 Unknown, 0 Unchecked, 195.6s Time] [2023-12-20 22:40:52,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 22:40:52,952 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 [2023-12-20 22:40:52,953 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-20 22:40:52,957 INFO L158 Benchmark]: Toolchain (without parser) took 233327.90ms. Allocated memory was 269.5MB in the beginning and 408.9MB in the end (delta: 139.5MB). Free memory was 224.5MB in the beginning and 312.7MB in the end (delta: -88.3MB). Peak memory consumption was 52.5MB. Max. memory is 8.0GB. [2023-12-20 22:40:52,957 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 195.0MB. Free memory is still 143.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 22:40:52,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.27ms. Allocated memory is still 269.5MB. Free memory was 223.9MB in the beginning and 206.6MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-20 22:40:52,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.45ms. Allocated memory is still 269.5MB. Free memory was 206.6MB in the beginning and 200.9MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-20 22:40:52,957 INFO L158 Benchmark]: Boogie Preprocessor took 62.14ms. Allocated memory is still 269.5MB. Free memory was 200.9MB in the beginning and 192.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-20 22:40:52,958 INFO L158 Benchmark]: RCFGBuilder took 543.88ms. Allocated memory is still 269.5MB. Free memory was 192.5MB in the beginning and 229.5MB in the end (delta: -37.0MB). Peak memory consumption was 41.6MB. Max. memory is 8.0GB. [2023-12-20 22:40:52,958 INFO L158 Benchmark]: TraceAbstraction took 232393.15ms. Allocated memory was 269.5MB in the beginning and 408.9MB in the end (delta: 139.5MB). Free memory was 228.5MB in the beginning and 312.7MB in the end (delta: -84.3MB). Peak memory consumption was 56.0MB. Max. memory is 8.0GB. [2023-12-20 22:40:52,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 195.0MB. Free memory is still 143.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.27ms. Allocated memory is still 269.5MB. Free memory was 223.9MB in the beginning and 206.6MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.45ms. Allocated memory is still 269.5MB. Free memory was 206.6MB in the beginning and 200.9MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.14ms. Allocated memory is still 269.5MB. Free memory was 200.9MB in the beginning and 192.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 543.88ms. Allocated memory is still 269.5MB. Free memory was 192.5MB in the beginning and 229.5MB in the end (delta: -37.0MB). Peak memory consumption was 41.6MB. Max. memory is 8.0GB. * TraceAbstraction took 232393.15ms. Allocated memory was 269.5MB in the beginning and 408.9MB in the end (delta: 139.5MB). Free memory was 228.5MB in the beginning and 312.7MB in the end (delta: -84.3MB). Peak memory consumption was 56.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...