/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_25-while_file-47.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 01:48:03,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 01:48:03,168 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 01:48:03,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 01:48:03,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 01:48:03,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 01:48:03,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 01:48:03,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 01:48:03,192 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 01:48:03,192 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 01:48:03,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 01:48:03,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 01:48:03,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 01:48:03,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 01:48:03,194 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 01:48:03,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 01:48:03,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 01:48:03,194 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 01:48:03,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 01:48:03,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 01:48:03,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 01:48:03,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 01:48:03,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 01:48:03,196 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 01:48:03,196 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 01:48:03,196 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 01:48:03,196 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 01:48:03,197 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 01:48:03,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 01:48:03,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 01:48:03,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 01:48:03,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 01:48:03,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 01:48:03,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 01:48:03,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 01:48:03,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 01:48:03,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 01:48:03,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 01:48:03,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 01:48:03,200 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 01:48:03,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 01:48:03,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 01:48:03,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 01:48:03,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 01:48:03,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 01:48:03,355 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 01:48:03,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-47.i [2023-12-24 01:48:04,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 01:48:04,497 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 01:48:04,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-47.i [2023-12-24 01:48:04,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558071e8a/ed69299739ce47ebb5ee463a2fb00b1d/FLAG7c9326a9f [2023-12-24 01:48:04,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558071e8a/ed69299739ce47ebb5ee463a2fb00b1d [2023-12-24 01:48:04,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 01:48:04,524 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 01:48:04,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 01:48:04,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 01:48:04,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 01:48:04,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbb0431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04, skipping insertion in model container [2023-12-24 01:48:04,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 01:48:04,670 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_25-while_file-47.i[915,928] [2023-12-24 01:48:04,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 01:48:04,700 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 01:48:04,708 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_25-while_file-47.i[915,928] [2023-12-24 01:48:04,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 01:48:04,747 INFO L206 MainTranslator]: Completed translation [2023-12-24 01:48:04,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04 WrapperNode [2023-12-24 01:48:04,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 01:48:04,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 01:48:04,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 01:48:04,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 01:48:04,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,789 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2023-12-24 01:48:04,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 01:48:04,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 01:48:04,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 01:48:04,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 01:48:04,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,809 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 01:48:04,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 01:48:04,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 01:48:04,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 01:48:04,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 01:48:04,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (1/1) ... [2023-12-24 01:48:04,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 01:48:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 01:48:04,848 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 01:48:04,868 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 01:48:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 01:48:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 01:48:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 01:48:04,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 01:48:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 01:48:04,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 01:48:04,918 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 01:48:04,920 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 01:48:05,412 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 01:48:05,441 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 01:48:05,441 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 01:48:05,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:48:05 BoogieIcfgContainer [2023-12-24 01:48:05,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 01:48:05,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 01:48:05,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 01:48:05,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 01:48:05,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 01:48:04" (1/3) ... [2023-12-24 01:48:05,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f6a359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:48:05, skipping insertion in model container [2023-12-24 01:48:05,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:48:04" (2/3) ... [2023-12-24 01:48:05,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f6a359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:48:05, skipping insertion in model container [2023-12-24 01:48:05,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:48:05" (3/3) ... [2023-12-24 01:48:05,447 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-47.i [2023-12-24 01:48:05,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 01:48:05,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 01:48:05,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 01:48:05,496 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;@6a22c521, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 01:48:05,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 01:48:05,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 01:48:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-24 01:48:05,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:48:05,506 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:05,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:48:05,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:48:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2066073024, now seen corresponding path program 1 times [2023-12-24 01:48:05,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:48:05,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96426932] [2023-12-24 01:48:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:48:05,520 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 01:48:05,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:48:05,521 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 01:48:05,523 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 01:48:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:48:05,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 01:48:05,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:48:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-24 01:48:05,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 01:48:05,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:48:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96426932] [2023-12-24 01:48:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96426932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 01:48:05,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 01:48:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 01:48:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311549399] [2023-12-24 01:48:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 01:48:05,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 01:48:05,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:48:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 01:48:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 01:48:05,721 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-24 01:48:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:48:05,934 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2023-12-24 01:48:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 01:48:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2023-12-24 01:48:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:48:05,949 INFO L225 Difference]: With dead ends: 67 [2023-12-24 01:48:05,949 INFO L226 Difference]: Without dead ends: 33 [2023-12-24 01:48:05,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 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 01:48:05,962 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 01:48:05,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 01:48:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-24 01:48:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-24 01:48:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 01:48:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2023-12-24 01:48:06,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 65 [2023-12-24 01:48:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:48:06,002 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2023-12-24 01:48:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-24 01:48:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2023-12-24 01:48:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-24 01:48:06,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:48:06,006 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:06,013 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 01:48:06,212 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 01:48:06,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:48:06,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:48:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash -62286396, now seen corresponding path program 1 times [2023-12-24 01:48:06,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:48:06,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520548203] [2023-12-24 01:48:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:48:06,215 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 01:48:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:48:06,216 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 01:48:06,225 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 01:48:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:48:06,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 01:48:06,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:48:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 43 proven. 24 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-24 01:48:09,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:48:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-24 01:48:18,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:48:18,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520548203] [2023-12-24 01:48:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520548203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 01:48:18,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 01:48:18,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 01:48:18,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810490060] [2023-12-24 01:48:18,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 01:48:18,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 01:48:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:48:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 01:48:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-24 01:48:18,396 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 01:48:30,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 01:48:41,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 01:48:45,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 01:48:48,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 01:48:56,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 01:48:58,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 01:48:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:48:59,356 INFO L93 Difference]: Finished difference Result 102 states and 140 transitions. [2023-12-24 01:48:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 01:48:59,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 65 [2023-12-24 01:48:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:48:59,369 INFO L225 Difference]: With dead ends: 102 [2023-12-24 01:48:59,369 INFO L226 Difference]: Without dead ends: 70 [2023-12-24 01:48:59,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2023-12-24 01:48:59,371 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-12-24 01:48:59,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 114 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2023-12-24 01:48:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-24 01:48:59,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 37. [2023-12-24 01:48:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-24 01:48:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2023-12-24 01:48:59,380 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 65 [2023-12-24 01:48:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:48:59,380 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2023-12-24 01:48:59,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 01:48:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2023-12-24 01:48:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-24 01:48:59,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:48:59,381 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:59,391 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 (3)] Forceful destruction successful, exit code 0 [2023-12-24 01:48:59,582 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 [2023-12-24 01:48:59,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:48:59,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:48:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1939978937, now seen corresponding path program 1 times [2023-12-24 01:48:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:48:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861955050] [2023-12-24 01:48:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:48:59,584 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 01:48:59,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:48:59,585 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) [2023-12-24 01:48:59,587 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 [2023-12-24 01:48:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:48:59,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 01:48:59,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:52:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 01:52:28,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:58:00,260 WARN L293 SmtUtils]: Spent 36.84s on a formula simplification. DAG size of input: 164 DAG size of output: 164 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:00:23,905 WARN L293 SmtUtils]: Spent 20.45s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:02:33,491 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-24 02:02:33,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:02:33,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861955050] [2023-12-24 02:02:33,492 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-24 02:02:33,500 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 [2023-12-24 02:02:33,500 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 101 [2023-12-24 02:02:33,693 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 [2023-12-24 02:02:33,693 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 59 more [2023-12-24 02:02:33,697 INFO L158 Benchmark]: Toolchain (without parser) took 869173.91ms. Allocated memory was 323.0MB in the beginning and 1.1GB in the end (delta: 795.9MB). Free memory was 276.7MB in the beginning and 725.7MB in the end (delta: -449.0MB). Peak memory consumption was 669.8MB. Max. memory is 8.0GB. [2023-12-24 02:02:33,698 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 200.3MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 02:02:33,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.71ms. Allocated memory is still 323.0MB. Free memory was 276.7MB in the beginning and 263.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-24 02:02:33,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.52ms. Allocated memory is still 323.0MB. Free memory was 263.6MB in the beginning and 261.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 02:02:33,699 INFO L158 Benchmark]: Boogie Preprocessor took 29.15ms. Allocated memory is still 323.0MB. Free memory was 261.5MB in the beginning and 258.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 02:02:33,699 INFO L158 Benchmark]: RCFGBuilder took 621.44ms. Allocated memory is still 323.0MB. Free memory was 258.9MB in the beginning and 241.6MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 02:02:33,699 INFO L158 Benchmark]: TraceAbstraction took 868254.12ms. Allocated memory was 323.0MB in the beginning and 1.1GB in the end (delta: 795.9MB). Free memory was 241.1MB in the beginning and 725.7MB in the end (delta: -484.7MB). Peak memory consumption was 634.1MB. Max. memory is 8.0GB. [2023-12-24 02:02:33,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 200.3MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.71ms. Allocated memory is still 323.0MB. Free memory was 276.7MB in the beginning and 263.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.52ms. Allocated memory is still 323.0MB. Free memory was 263.6MB in the beginning and 261.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.15ms. Allocated memory is still 323.0MB. Free memory was 261.5MB in the beginning and 258.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 621.44ms. Allocated memory is still 323.0MB. Free memory was 258.9MB in the beginning and 241.6MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 868254.12ms. Allocated memory was 323.0MB in the beginning and 1.1GB in the end (delta: 795.9MB). Free memory was 241.1MB in the beginning and 725.7MB in the end (delta: -484.7MB). Peak memory consumption was 634.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...