/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-37.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:37:59,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:37:59,958 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:37:59,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:37:59,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:37:59,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:37:59,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:37:59,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:37:59,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:37:59,989 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:37:59,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:37:59,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:37:59,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:37:59,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:37:59,991 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:37:59,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:37:59,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:37:59,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:37:59,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:37:59,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:37:59,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:37:59,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:37:59,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:37:59,993 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:37:59,994 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:37:59,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:37:59,994 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:37:59,994 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:37:59,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:37:59,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:37:59,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:37:59,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:37:59,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:37:59,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:37:59,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:37:59,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:37:59,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:37:59,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:37:59,997 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:37:59,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:38:00,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:38:00,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:38:00,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:38:00,209 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:38:00,209 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:38:00,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-37.i [2023-12-16 12:38:01,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:38:01,468 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:38:01,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-37.i [2023-12-16 12:38:01,476 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14fb2c12e/9b4905dbf066463a90a1c99ad9bcd127/FLAG59232d0de [2023-12-16 12:38:01,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14fb2c12e/9b4905dbf066463a90a1c99ad9bcd127 [2023-12-16 12:38:01,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:38:01,494 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:38:01,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:38:01,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:38:01,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:38:01,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132b5967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01, skipping insertion in model container [2023-12-16 12:38:01,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:38:01,657 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-ps-ci_file-37.i[919,932] [2023-12-16 12:38:01,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:38:01,719 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:38:01,727 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-ps-ci_file-37.i[919,932] [2023-12-16 12:38:01,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:38:01,763 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:38:01,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01 WrapperNode [2023-12-16 12:38:01,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:38:01,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:38:01,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:38:01,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:38:01,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,803 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 187 [2023-12-16 12:38:01,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:38:01,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:38:01,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:38:01,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:38:01,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,827 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 12:38:01,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:38:01,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:38:01,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:38:01,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:38:01,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (1/1) ... [2023-12-16 12:38:01,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:38:01,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:38:01,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 12:38:01,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 12:38:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:38:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:38:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:38:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:38:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:38:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:38:01,998 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:38:02,000 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:38:12,568 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:38:12,602 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:38:12,602 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:38:12,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:38:12 BoogieIcfgContainer [2023-12-16 12:38:12,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:38:12,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:38:12,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:38:12,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:38:12,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:38:01" (1/3) ... [2023-12-16 12:38:12,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c17615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:38:12, skipping insertion in model container [2023-12-16 12:38:12,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:38:01" (2/3) ... [2023-12-16 12:38:12,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c17615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:38:12, skipping insertion in model container [2023-12-16 12:38:12,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:38:12" (3/3) ... [2023-12-16 12:38:12,609 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-37.i [2023-12-16 12:38:12,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:38:12,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:38:12,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:38:12,662 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;@3e860d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:38:12,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:38:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 49 states have (on average 1.530612244897959) internal successors, (75), 50 states have internal predecessors, (75), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 12:38:12,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 12:38:12,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:38:12,679 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:38:12,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:38:12,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:38:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash -92771528, now seen corresponding path program 1 times [2023-12-16 12:38:12,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:38:12,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408236151] [2023-12-16 12:38:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:38:12,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:38:12,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:38:12,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:38:12,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 12:38:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:38:13,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:38:13,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:38:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2023-12-16 12:38:13,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:38:13,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:38:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408236151] [2023-12-16 12:38:13,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408236151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:38:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:38:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:38:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144315035] [2023-12-16 12:38:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:38:13,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:38:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:38:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:38:13,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:38:13,437 INFO L87 Difference]: Start difference. First operand has 78 states, 49 states have (on average 1.530612244897959) internal successors, (75), 50 states have internal predecessors, (75), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:38:17,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:38:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:38:17,656 INFO L93 Difference]: Finished difference Result 152 states and 276 transitions. [2023-12-16 12:38:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:38:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 167 [2023-12-16 12:38:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:38:17,724 INFO L225 Difference]: With dead ends: 152 [2023-12-16 12:38:17,724 INFO L226 Difference]: Without dead ends: 75 [2023-12-16 12:38:17,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:38:17,728 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:38:17,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 12:38:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-16 12:38:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-16 12:38:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 12:38:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 117 transitions. [2023-12-16 12:38:17,757 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 117 transitions. Word has length 167 [2023-12-16 12:38:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:38:17,758 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 117 transitions. [2023-12-16 12:38:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:38:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 117 transitions. [2023-12-16 12:38:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 12:38:17,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:38:17,760 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:38:17,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 12:38:17,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:38:17,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:38:17,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:38:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1913552450, now seen corresponding path program 1 times [2023-12-16 12:38:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:38:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795305270] [2023-12-16 12:38:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:38:17,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:38:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:38:17,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:38:17,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 12:38:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:38:18,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:38:18,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:38:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 12:38:21,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:38:21,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:38:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795305270] [2023-12-16 12:38:21,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795305270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:38:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [601840566] [2023-12-16 12:38:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:38:21,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:38:21,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:38:21,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:38:21,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 12:38:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:38:23,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:38:23,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:38:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-16 12:38:25,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:38:25,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [601840566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:38:25,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 12:38:25,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-16 12:38:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152533352] [2023-12-16 12:38:25,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:38:25,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 12:38:25,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:38:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 12:38:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:38:25,382 INFO L87 Difference]: Start difference. First operand 75 states and 117 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-16 12:38:29,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:38:33,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:38:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:38:33,745 INFO L93 Difference]: Finished difference Result 215 states and 339 transitions. [2023-12-16 12:38:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 12:38:33,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 167 [2023-12-16 12:38:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:38:33,748 INFO L225 Difference]: With dead ends: 215 [2023-12-16 12:38:33,748 INFO L226 Difference]: Without dead ends: 141 [2023-12-16 12:38:33,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:38:33,750 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 27 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-16 12:38:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 214 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2023-12-16 12:38:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-16 12:38:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 127. [2023-12-16 12:38:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 72 states have internal predecessors, (94), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-16 12:38:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 198 transitions. [2023-12-16 12:38:33,767 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 198 transitions. Word has length 167 [2023-12-16 12:38:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:38:33,768 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 198 transitions. [2023-12-16 12:38:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-12-16 12:38:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 198 transitions. [2023-12-16 12:38:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 12:38:33,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:38:33,770 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:38:33,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-16 12:38:33,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 12:38:34,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:38:34,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:38:34,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:38:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1360346492, now seen corresponding path program 1 times [2023-12-16 12:38:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:38:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146738891] [2023-12-16 12:38:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:38:34,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:38:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:38:34,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:38:34,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 12:38:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:38:34,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:38:34,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:38:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 12:38:37,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:38:37,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:38:37,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146738891] [2023-12-16 12:38:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146738891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:38:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1343394648] [2023-12-16 12:38:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:38:37,589 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:38:37,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:38:37,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:38:37,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 12:38:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:38:38,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:38:38,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:38:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 543 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 12:38:44,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:38:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-16 12:38:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1343394648] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:38:44,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 12:38:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-16 12:38:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119534701] [2023-12-16 12:38:44,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 12:38:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 12:38:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:38:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 12:38:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-16 12:38:44,866 INFO L87 Difference]: Start difference. First operand 127 states and 198 transitions. Second operand has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 5 states have call successors, (70), 4 states have call predecessors, (70), 6 states have return successors, (71), 4 states have call predecessors, (71), 5 states have call successors, (71) [2023-12-16 12:38:52,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:38:57,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:39:01,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:39:05,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:39:09,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:39:13,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:39:16,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-16 12:39:16,827 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:39:16,828 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:39:16,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:39:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 12:39:16,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2023-12-16 12:39:16,869 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 117 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 74 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2023-12-16 12:39:16,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 208 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 361 Invalid, 5 Unknown, 0 Unchecked, 29.9s Time] [2023-12-16 12:39:16,871 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 12:39:16,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:39:17,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-16 12:39:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 12:39:17,286 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (127states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (105 states constructed, input type IntersectNwa). [2023-12-16 12:39:17,289 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 12:39:17,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 12:39:17,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:39:17 BoogieIcfgContainer [2023-12-16 12:39:17,292 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 12:39:17,293 INFO L158 Benchmark]: Toolchain (without parser) took 75798.87ms. Allocated memory is still 277.9MB. Free memory was 232.4MB in the beginning and 134.7MB in the end (delta: 97.7MB). Peak memory consumption was 98.7MB. Max. memory is 8.0GB. [2023-12-16 12:39:17,293 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 205.5MB. Free memory was 152.6MB in the beginning and 152.5MB in the end (delta: 86.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 12:39:17,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.23ms. Allocated memory is still 277.9MB. Free memory was 232.4MB in the beginning and 216.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 12:39:17,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.59ms. Allocated memory is still 277.9MB. Free memory was 216.1MB in the beginning and 213.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 12:39:17,293 INFO L158 Benchmark]: Boogie Preprocessor took 42.12ms. Allocated memory is still 277.9MB. Free memory was 213.5MB in the beginning and 209.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 12:39:17,294 INFO L158 Benchmark]: RCFGBuilder took 10755.58ms. Allocated memory is still 277.9MB. Free memory was 209.3MB in the beginning and 184.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 12:39:17,294 INFO L158 Benchmark]: TraceAbstraction took 64687.97ms. Allocated memory is still 277.9MB. Free memory was 183.6MB in the beginning and 134.7MB in the end (delta: 48.9MB). Peak memory consumption was 49.4MB. Max. memory is 8.0GB. [2023-12-16 12:39:17,296 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 205.5MB. Free memory was 152.6MB in the beginning and 152.5MB in the end (delta: 86.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.23ms. Allocated memory is still 277.9MB. Free memory was 232.4MB in the beginning and 216.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.59ms. Allocated memory is still 277.9MB. Free memory was 216.1MB in the beginning and 213.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.12ms. Allocated memory is still 277.9MB. Free memory was 213.5MB in the beginning and 209.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 10755.58ms. Allocated memory is still 277.9MB. Free memory was 209.3MB in the beginning and 184.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 64687.97ms. Allocated memory is still 277.9MB. Free memory was 183.6MB in the beginning and 134.7MB in the end (delta: 48.9MB). Peak memory consumption was 49.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (127states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (105 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.6s, OverallIterations: 3, TraceHistogramMax: 26, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 44.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 42.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 536 SdHoareTripleChecker+Invalid, 41.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 380 IncrementalHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 288 mSDtfsCounter, 380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1330 GetRequests, 1298 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=2, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 835 NumberOfCodeBlocks, 835 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 996 ConstructedInterpolants, 116 QuantifiedInterpolants, 7092 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1391 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 7542/7800 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown