/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_normal_file-48.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 13:07:06,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 13:07:06,999 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 13:07:07,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 13:07:07,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 13:07:07,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 13:07:07,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 13:07:07,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 13:07:07,032 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 13:07:07,032 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 13:07:07,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 13:07:07,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 13:07:07,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 13:07:07,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 13:07:07,033 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 13:07:07,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 13:07:07,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 13:07:07,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 13:07:07,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 13:07:07,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 13:07:07,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 13:07:07,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 13:07:07,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 13:07:07,038 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 13:07:07,041 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 13:07:07,041 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 13:07:07,041 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 13:07:07,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 13:07:07,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 13:07:07,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 13:07:07,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:07:07,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 13:07:07,043 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 13:07:07,044 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 13:07:07,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 13:07:07,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 13:07:07,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 13:07:07,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 13:07:07,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 13:07:07,045 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 13:07:07,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 13:07:07,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 13:07:07,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 13:07:07,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 13:07:07,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 13:07:07,272 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 13:07:07,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-48.i [2023-12-16 13:07:08,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 13:07:08,532 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 13:07:08,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-48.i [2023-12-16 13:07:08,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2526ba7a2/5ca2961f7b6c4ed7812a791b7c1d7d53/FLAGf386bfd46 [2023-12-16 13:07:08,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2526ba7a2/5ca2961f7b6c4ed7812a791b7c1d7d53 [2023-12-16 13:07:08,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 13:07:08,557 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 13:07:08,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 13:07:08,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 13:07:08,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 13:07:08,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e977d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08, skipping insertion in model container [2023-12-16 13:07:08,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 13:07:08,719 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_normal_file-48.i[913,926] [2023-12-16 13:07:08,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:07:08,795 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 13:07:08,805 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_normal_file-48.i[913,926] [2023-12-16 13:07:08,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:07:08,883 INFO L206 MainTranslator]: Completed translation [2023-12-16 13:07:08,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08 WrapperNode [2023-12-16 13:07:08,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 13:07:08,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 13:07:08,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 13:07:08,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 13:07:08,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,922 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 142 [2023-12-16 13:07:08,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 13:07:08,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 13:07:08,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 13:07:08,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 13:07:08,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,958 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 13:07:08,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,968 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 13:07:08,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 13:07:08,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 13:07:08,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 13:07:08,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (1/1) ... [2023-12-16 13:07:08,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:07:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 13:07:09,007 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 13:07:09,013 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 13:07:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 13:07:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 13:07:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 13:07:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 13:07:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 13:07:09,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 13:07:09,106 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 13:07:09,108 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 13:07:33,676 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 13:07:33,737 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 13:07:33,737 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 13:07:33,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:07:33 BoogieIcfgContainer [2023-12-16 13:07:33,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 13:07:33,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 13:07:33,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 13:07:33,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 13:07:33,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:07:08" (1/3) ... [2023-12-16 13:07:33,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b859173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:07:33, skipping insertion in model container [2023-12-16 13:07:33,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:08" (2/3) ... [2023-12-16 13:07:33,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b859173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:07:33, skipping insertion in model container [2023-12-16 13:07:33,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:07:33" (3/3) ... [2023-12-16 13:07:33,743 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-48.i [2023-12-16 13:07:33,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 13:07:33,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 13:07:33,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 13:07:33,815 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;@2c80c361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 13:07:33,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 13:07:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 37 states have internal predecessors, (53), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 13:07:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 13:07:33,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:07:33,827 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:33,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:07:33,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:07:33,831 INFO L85 PathProgramCache]: Analyzing trace with hash 275916352, now seen corresponding path program 1 times [2023-12-16 13:07:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:07:33,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552889877] [2023-12-16 13:07:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:07:33,839 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 13:07:33,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:07:33,842 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 13:07:33,843 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 13:07:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:07:35,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 13:07:35,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:07:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-16 13:07:35,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:07:35,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:07:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552889877] [2023-12-16 13:07:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552889877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:07:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:07:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 13:07:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130280198] [2023-12-16 13:07:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:07:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 13:07:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:07:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 13:07:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 13:07:35,490 INFO L87 Difference]: Start difference. First operand has 59 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 37 states have internal predecessors, (53), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 13:07:40,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 13:07:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:07:40,811 INFO L93 Difference]: Finished difference Result 114 states and 202 transitions. [2023-12-16 13:07:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 13:07:41,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 125 [2023-12-16 13:07:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:07:41,270 INFO L225 Difference]: With dead ends: 114 [2023-12-16 13:07:41,270 INFO L226 Difference]: Without dead ends: 56 [2023-12-16 13:07:41,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 124 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 13:07:41,274 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-16 13:07:41,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-16 13:07:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-16 13:07:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-16 13:07:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 13:07:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 85 transitions. [2023-12-16 13:07:41,301 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 85 transitions. Word has length 125 [2023-12-16 13:07:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:07:41,302 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 85 transitions. [2023-12-16 13:07:41,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 13:07:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 85 transitions. [2023-12-16 13:07:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 13:07:41,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:07:41,304 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:41,331 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 13:07:41,519 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 13:07:41,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:07:41,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:07:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash 843684408, now seen corresponding path program 1 times [2023-12-16 13:07:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:07:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028440615] [2023-12-16 13:07:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:07:41,524 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 13:07:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:07:41,532 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 13:07:41,533 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 13:07:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:07:42,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 13:07:42,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:07:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 13:07:43,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:07:43,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:07:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028440615] [2023-12-16 13:07:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028440615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:07:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:07:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 13:07:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869355064] [2023-12-16 13:07:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:07:43,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 13:07:43,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:07:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 13:07:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:07:43,157 INFO L87 Difference]: Start difference. First operand 56 states and 85 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 13:07:48,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 13:07:52,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 13:07:56,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 13:07:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:07:57,066 INFO L93 Difference]: Finished difference Result 127 states and 193 transitions. [2023-12-16 13:07:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 13:07:57,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-16 13:07:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:07:57,071 INFO L225 Difference]: With dead ends: 127 [2023-12-16 13:07:57,071 INFO L226 Difference]: Without dead ends: 72 [2023-12-16 13:07:57,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:07:57,072 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 16 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-16 13:07:57,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 154 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2023-12-16 13:07:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-16 13:07:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2023-12-16 13:07:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 13:07:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 95 transitions. [2023-12-16 13:07:57,085 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 95 transitions. Word has length 125 [2023-12-16 13:07:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:07:57,087 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 95 transitions. [2023-12-16 13:07:57,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 13:07:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 95 transitions. [2023-12-16 13:07:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 13:07:57,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:07:57,089 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:57,113 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 13:07:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 13:07:57,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:07:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:07:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash 845531450, now seen corresponding path program 1 times [2023-12-16 13:07:57,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:07:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48612740] [2023-12-16 13:07:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:07:57,314 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 13:07:57,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:07:57,315 INFO L229 MonitoredProcess]: Starting monitored process 4 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 13:07:57,317 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 (4)] Waiting until timeout for monitored process [2023-12-16 13:07:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:07:58,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 13:07:58,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:08:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 13:08:01,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:08:01,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:08:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48612740] [2023-12-16 13:08:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48612740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:08:01,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:08:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 13:08:01,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819962394] [2023-12-16 13:08:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:08:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 13:08:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:08:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 13:08:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:08:01,934 INFO L87 Difference]: Start difference. First operand 63 states and 95 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 13:08:07,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 13:08:13,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 13:08:17,099 WARN L539 Checker$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 [] [2023-12-16 13:08:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:08:17,625 INFO L93 Difference]: Finished difference Result 187 states and 283 transitions. [2023-12-16 13:08:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 13:08:17,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-16 13:08:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:08:17,627 INFO L225 Difference]: With dead ends: 187 [2023-12-16 13:08:17,627 INFO L226 Difference]: Without dead ends: 125 [2023-12-16 13:08:17,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:08:17,628 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 18 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-16 13:08:17,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 157 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-12-16 13:08:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-16 13:08:17,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-12-16 13:08:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 80 states have (on average 1.325) internal successors, (106), 80 states have internal predecessors, (106), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 13:08:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 186 transitions. [2023-12-16 13:08:17,645 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 186 transitions. Word has length 125 [2023-12-16 13:08:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:08:17,645 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 186 transitions. [2023-12-16 13:08:17,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 13:08:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 186 transitions. [2023-12-16 13:08:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 13:08:17,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:08:17,647 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:17,676 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 (4)] Ended with exit code 0 [2023-12-16 13:08:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 13:08:17,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:08:17,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:08:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash 441378135, now seen corresponding path program 1 times [2023-12-16 13:08:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:08:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169988863] [2023-12-16 13:08:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:08:17,874 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 13:08:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:08:17,875 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 13:08:17,879 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 13:08:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:08:19,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 13:08:19,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 13:08:29,541 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 13:08:29,550 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 13:08:30,594 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 13:08:30,742 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 13:08:30,824 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 13:08:30,824 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 127 with TraceHistMax 20,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 13:08:30,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 13:08:30,828 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 13:08:30,830 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 13:08:30,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:08:30 BoogieIcfgContainer [2023-12-16 13:08:30,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 13:08:30,835 INFO L158 Benchmark]: Toolchain (without parser) took 82276.60ms. Allocated memory was 196.1MB in the beginning and 306.2MB in the end (delta: 110.1MB). Free memory was 148.6MB in the beginning and 202.8MB in the end (delta: -54.2MB). Peak memory consumption was 57.5MB. Max. memory is 8.0GB. [2023-12-16 13:08:30,835 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory was 144.9MB in the beginning and 144.8MB in the end (delta: 71.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 13:08:30,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.82ms. Allocated memory is still 196.1MB. Free memory was 148.6MB in the beginning and 133.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 13:08:30,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 196.1MB. Free memory was 133.9MB in the beginning and 131.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 13:08:30,837 INFO L158 Benchmark]: Boogie Preprocessor took 50.06ms. Allocated memory is still 196.1MB. Free memory was 131.5MB in the beginning and 128.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 13:08:30,837 INFO L158 Benchmark]: RCFGBuilder took 24763.39ms. Allocated memory was 196.1MB in the beginning and 306.2MB in the end (delta: 110.1MB). Free memory was 128.3MB in the beginning and 274.0MB in the end (delta: -145.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 13:08:30,839 INFO L158 Benchmark]: TraceAbstraction took 57093.60ms. Allocated memory is still 306.2MB. Free memory was 273.4MB in the beginning and 202.8MB in the end (delta: 70.6MB). Peak memory consumption was 71.2MB. Max. memory is 8.0GB. [2023-12-16 13:08:30,841 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory was 144.9MB in the beginning and 144.8MB in the end (delta: 71.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.82ms. Allocated memory is still 196.1MB. Free memory was 148.6MB in the beginning and 133.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 196.1MB. Free memory was 133.9MB in the beginning and 131.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.06ms. Allocated memory is still 196.1MB. Free memory was 131.5MB in the beginning and 128.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 24763.39ms. Allocated memory was 196.1MB in the beginning and 306.2MB in the end (delta: 110.1MB). Free memory was 128.3MB in the beginning and 274.0MB in the end (delta: -145.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 57093.60ms. Allocated memory is still 306.2MB. Free memory was 273.4MB in the beginning and 202.8MB in the end (delta: 70.6MB). Peak memory consumption was 71.2MB. 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 analyzing trace of length 127 with TraceHistMax 20,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.0s, OverallIterations: 4, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 34.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 393 SdHoareTripleChecker+Invalid, 33.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 242 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 372 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=3, InterpolantAutomatonStates: 8, 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, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 375 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 2 NumberOfNonLiveVariables, 623 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2280/2280 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