/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_loopvsstraightlinecode_50-while_file-16.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 03:43:44,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 03:43:44,589 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 03:43:44,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 03:43:44,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 03:43:44,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 03:43:44,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 03:43:44,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 03:43:44,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 03:43:44,620 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 03:43:44,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 03:43:44,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 03:43:44,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 03:43:44,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 03:43:44,625 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 03:43:44,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 03:43:44,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 03:43:44,627 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 03:43:44,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 03:43:44,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 03:43:44,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 03:43:44,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 03:43:44,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 03:43:44,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 03:43:44,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 03:43:44,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 03:43:44,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 03:43:44,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 03:43:44,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 03:43:44,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 03:43:44,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 03:43:44,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 03:43:44,631 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 03:43:44,631 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 03:43:44,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 03:43:44,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 03:43:44,631 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 03:43:44,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 03:43:44,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 03:43:44,632 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 03:43:44,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 03:43:44,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 03:43:44,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 03:43:44,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 03:43:44,797 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 03:43:44,798 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 03:43:44,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-16.i [2023-12-24 03:43:45,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 03:43:45,967 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 03:43:45,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-16.i [2023-12-24 03:43:45,973 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac79f2f0d/91224e99befc407293ce893ed7bdd97c/FLAG0f793d758 [2023-12-24 03:43:45,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac79f2f0d/91224e99befc407293ce893ed7bdd97c [2023-12-24 03:43:45,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 03:43:45,985 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 03:43:45,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 03:43:45,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 03:43:45,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 03:43:45,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:43:45" (1/1) ... [2023-12-24 03:43:45,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10eec2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:45, skipping insertion in model container [2023-12-24 03:43:45,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:43:45" (1/1) ... [2023-12-24 03:43:46,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 03:43:46,115 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-16.i[915,928] [2023-12-24 03:43:46,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 03:43:46,159 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 03:43:46,170 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-16.i[915,928] [2023-12-24 03:43:46,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 03:43:46,218 INFO L206 MainTranslator]: Completed translation [2023-12-24 03:43:46,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46 WrapperNode [2023-12-24 03:43:46,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 03:43:46,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 03:43:46,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 03:43:46,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 03:43:46,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,255 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 153 [2023-12-24 03:43:46,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 03:43:46,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 03:43:46,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 03:43:46,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 03:43:46,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,267 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,275 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]. [2023-12-24 03:43:46,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 03:43:46,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 03:43:46,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 03:43:46,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 03:43:46,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (1/1) ... [2023-12-24 03:43:46,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 03:43:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 03:43:46,313 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) [2023-12-24 03:43:46,341 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 [2023-12-24 03:43:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 03:43:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 03:43:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 03:43:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 03:43:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 03:43:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 03:43:46,454 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 03:43:46,461 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 03:43:47,763 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 03:43:47,793 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 03:43:47,793 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 03:43:47,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:43:47 BoogieIcfgContainer [2023-12-24 03:43:47,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 03:43:47,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 03:43:47,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 03:43:47,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 03:43:47,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:43:45" (1/3) ... [2023-12-24 03:43:47,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2c642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:43:47, skipping insertion in model container [2023-12-24 03:43:47,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:43:46" (2/3) ... [2023-12-24 03:43:47,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2c642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:43:47, skipping insertion in model container [2023-12-24 03:43:47,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:43:47" (3/3) ... [2023-12-24 03:43:47,799 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-16.i [2023-12-24 03:43:47,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 03:43:47,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 03:43:47,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 03:43:47,842 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;@493cefce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 03:43:47,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 03:43:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 03:43:47,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 03:43:47,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:43:47,862 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 03:43:47,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:43:47,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:43:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1412911437, now seen corresponding path program 1 times [2023-12-24 03:43:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:43:47,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83829878] [2023-12-24 03:43:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:43:47,876 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 [2023-12-24 03:43:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:43:47,889 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) [2023-12-24 03:43:47,935 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 [2023-12-24 03:43:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:43:48,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 03:43:48,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:43:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-24 03:43:48,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 03:43:48,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 03:43:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83829878] [2023-12-24 03:43:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83829878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 03:43:48,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 03:43:48,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 03:43:48,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18671657] [2023-12-24 03:43:48,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 03:43:48,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 03:43:48,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 03:43:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 03:43:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 03:43:48,344 INFO L87 Difference]: Start difference. First operand has 63 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-24 03:43:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 03:43:49,195 INFO L93 Difference]: Finished difference Result 123 states and 216 transitions. [2023-12-24 03:43:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 03:43:49,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 140 [2023-12-24 03:43:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 03:43:49,222 INFO L225 Difference]: With dead ends: 123 [2023-12-24 03:43:49,222 INFO L226 Difference]: Without dead ends: 61 [2023-12-24 03:43:49,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 03:43:49,230 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 03:43:49,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 03:43:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-24 03:43:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-24 03:43:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 03:43:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 93 transitions. [2023-12-24 03:43:49,271 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 93 transitions. Word has length 140 [2023-12-24 03:43:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 03:43:49,272 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 93 transitions. [2023-12-24 03:43:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-24 03:43:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 93 transitions. [2023-12-24 03:43:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 03:43:49,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 03:43:49,282 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 03:43:49,293 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 [2023-12-24 03:43:49,491 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 [2023-12-24 03:43:49,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 03:43:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 03:43:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1395422725, now seen corresponding path program 1 times [2023-12-24 03:43:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 03:43:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396547229] [2023-12-24 03:43:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 03:43:49,495 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 [2023-12-24 03:43:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 03:43:49,498 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) [2023-12-24 03:43:49,502 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 [2023-12-24 03:43:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 03:43:49,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 03:43:49,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 03:44:23,632 WARN L293 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)