/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_100-1loop_file-83.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 22:07:32,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 22:07:32,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 22:07:32,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 22:07:32,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 22:07:32,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 22:07:32,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 22:07:32,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 22:07:32,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 22:07:32,799 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 22:07:32,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 22:07:32,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 22:07:32,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 22:07:32,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 22:07:32,805 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 22:07:32,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 22:07:32,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 22:07:32,807 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 22:07:32,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 22:07:32,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 22:07:32,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 22:07:32,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 22:07:32,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 22:07:32,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 22:07:32,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 22:07:32,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 22:07:32,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 22:07:32,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 22:07:32,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 22:07:32,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 22:07:32,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 22:07:32,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 22:07:32,811 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 22:07:32,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 22:07:32,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 22:07:32,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 22:07:32,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 22:07:32,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 22:07:32,996 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 22:07:32,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-83.i [2023-12-23 22:07:34,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 22:07:34,231 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 22:07:34,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-83.i [2023-12-23 22:07:34,247 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2b5582b/677cc0b48fda4c9b9a128584e8620dbe/FLAG208e7245c [2023-12-23 22:07:34,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2b5582b/677cc0b48fda4c9b9a128584e8620dbe [2023-12-23 22:07:34,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 22:07:34,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 22:07:34,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 22:07:34,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 22:07:34,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 22:07:34,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7921f569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34, skipping insertion in model container [2023-12-23 22:07:34,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 22:07:34,417 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-83.i[916,929] [2023-12-23 22:07:34,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 22:07:34,492 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 22:07:34,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-83.i[916,929] [2023-12-23 22:07:34,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 22:07:34,560 INFO L206 MainTranslator]: Completed translation [2023-12-23 22:07:34,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34 WrapperNode [2023-12-23 22:07:34,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 22:07:34,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 22:07:34,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 22:07:34,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 22:07:34,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,607 INFO L138 Inliner]: procedures = 27, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 190 [2023-12-23 22:07:34,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 22:07:34,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 22:07:34,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 22:07:34,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 22:07:34,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,638 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]. [2023-12-23 22:07:34,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 22:07:34,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 22:07:34,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 22:07:34,656 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 22:07:34,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (1/1) ... [2023-12-23 22:07:34,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 22:07:34,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 22:07:34,695 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) [2023-12-23 22:07:34,752 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 [2023-12-23 22:07:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 22:07:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 22:07:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 22:07:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 22:07:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 22:07:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 22:07:34,855 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 22:07:34,857 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 22:07:41,821 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 22:07:41,853 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 22:07:41,853 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 22:07:41,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:07:41 BoogieIcfgContainer [2023-12-23 22:07:41,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 22:07:41,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 22:07:41,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 22:07:41,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 22:07:41,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:07:34" (1/3) ... [2023-12-23 22:07:41,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bcfbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:07:41, skipping insertion in model container [2023-12-23 22:07:41,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:07:34" (2/3) ... [2023-12-23 22:07:41,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bcfbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:07:41, skipping insertion in model container [2023-12-23 22:07:41,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:07:41" (3/3) ... [2023-12-23 22:07:41,860 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-83.i [2023-12-23 22:07:41,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 22:07:41,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 22:07:41,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 22:07:41,907 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;@6b356196, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 22:07:41,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 22:07:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 46 states have internal predecessors, (65), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-23 22:07:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-23 22:07:41,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:07:41,920 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:07:41,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:07:41,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:07:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1303460723, now seen corresponding path program 1 times [2023-12-23 22:07:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:07:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153384284] [2023-12-23 22:07:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:07:41,935 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 [2023-12-23 22:07:41,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:07:41,937 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) [2023-12-23 22:07:41,982 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 [2023-12-23 22:07:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:07:42,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 22:07:42,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:07:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 824 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-12-23 22:07:42,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 22:07:42,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:07:42,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153384284] [2023-12-23 22:07:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153384284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 22:07:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 22:07:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 22:07:42,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538213480] [2023-12-23 22:07:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 22:07:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 22:07:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:07:42,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 22:07:42,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 22:07:42,444 INFO L87 Difference]: Start difference. First operand has 77 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 46 states have internal predecessors, (65), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-23 22:07:46,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:07:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:07:46,695 INFO L93 Difference]: Finished difference Result 153 states and 274 transitions. [2023-12-23 22:07:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 22:07:46,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 181 [2023-12-23 22:07:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:07:46,702 INFO L225 Difference]: With dead ends: 153 [2023-12-23 22:07:46,702 INFO L226 Difference]: Without dead ends: 75 [2023-12-23 22:07:46,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 22:07:46,706 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-23 22:07:46,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-23 22:07:46,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-23 22:07:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-23 22:07:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-23 22:07:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 117 transitions. [2023-12-23 22:07:46,734 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 117 transitions. Word has length 181 [2023-12-23 22:07:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:07:46,734 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 117 transitions. [2023-12-23 22:07:46,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-23 22:07:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 117 transitions. [2023-12-23 22:07:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-23 22:07:46,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:07:46,737 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:07:46,748 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 [2023-12-23 22:07:46,947 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 [2023-12-23 22:07:46,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:07:46,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:07:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2050139381, now seen corresponding path program 1 times [2023-12-23 22:07:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:07:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304637735] [2023-12-23 22:07:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:07:46,950 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 [2023-12-23 22:07:46,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:07:46,954 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) [2023-12-23 22:07:46,958 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 [2023-12-23 22:07:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:07:47,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 22:07:47,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:07:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 288 proven. 6 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2023-12-23 22:07:47,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 22:07:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-23 22:07:47,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:07:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304637735] [2023-12-23 22:07:47,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304637735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 22:07:47,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 22:07:47,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 22:07:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253556] [2023-12-23 22:07:47,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 22:07:47,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 22:07:47,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:07:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 22:07:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 22:07:47,868 INFO L87 Difference]: Start difference. First operand 75 states and 117 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-23 22:07:54,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:07:58,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:08:02,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:08:06,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:08:09,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:08:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:08:11,773 INFO L93 Difference]: Finished difference Result 319 states and 482 transitions. [2023-12-23 22:08:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-23 22:08:11,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 181 [2023-12-23 22:08:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:08:11,781 INFO L225 Difference]: With dead ends: 319 [2023-12-23 22:08:11,781 INFO L226 Difference]: Without dead ends: 245 [2023-12-23 22:08:11,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-12-23 22:08:11,783 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 335 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 175 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2023-12-23 22:08:11,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 426 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 497 Invalid, 4 Unknown, 0 Unchecked, 23.2s Time] [2023-12-23 22:08:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-23 22:08:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 93. [2023-12-23 22:08:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-23 22:08:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 140 transitions. [2023-12-23 22:08:11,817 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 140 transitions. Word has length 181 [2023-12-23 22:08:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:08:11,817 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 140 transitions. [2023-12-23 22:08:11,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-23 22:08:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 140 transitions. [2023-12-23 22:08:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-23 22:08:11,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:08:11,819 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:08:11,847 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 [2023-12-23 22:08:12,033 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 [2023-12-23 22:08:12,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:08:12,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:08:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash 461791479, now seen corresponding path program 1 times [2023-12-23 22:08:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:08:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260435908] [2023-12-23 22:08:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:08:12,037 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 [2023-12-23 22:08:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:08:12,038 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) [2023-12-23 22:08:12,039 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 [2023-12-23 22:08:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:08:12,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 22:08:12,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:08:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 820 proven. 48 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2023-12-23 22:08:18,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 22:08:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-23 22:08:18,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:08:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260435908] [2023-12-23 22:08:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260435908] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 22:08:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 22:08:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-23 22:08:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823472143] [2023-12-23 22:08:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 22:08:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 22:08:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:08:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 22:08:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 22:08:18,766 INFO L87 Difference]: Start difference. First operand 93 states and 140 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-23 22:08:23,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 22:08:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:08:23,769 INFO L93 Difference]: Finished difference Result 189 states and 282 transitions. [2023-12-23 22:08:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 22:08:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 181 [2023-12-23 22:08:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:08:23,771 INFO L225 Difference]: With dead ends: 189 [2023-12-23 22:08:23,772 INFO L226 Difference]: Without dead ends: 97 [2023-12-23 22:08:23,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 22:08:23,773 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 58 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-23 22:08:23,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 159 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-12-23 22:08:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-23 22:08:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-23 22:08:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.296875) internal successors, (83), 64 states have internal predecessors, (83), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-23 22:08:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2023-12-23 22:08:23,782 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 181 [2023-12-23 22:08:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:08:23,782 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2023-12-23 22:08:23,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-23 22:08:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2023-12-23 22:08:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-23 22:08:23,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:08:23,784 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:08:23,797 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 [2023-12-23 22:08:23,995 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 [2023-12-23 22:08:23,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:08:23,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:08:23,996 INFO L85 PathProgramCache]: Analyzing trace with hash 68764469, now seen corresponding path program 1 times [2023-12-23 22:08:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:08:23,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160015140] [2023-12-23 22:08:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:08:23,997 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 [2023-12-23 22:08:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:08:23,999 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) [2023-12-23 22:08:24,003 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 [2023-12-23 22:08:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:08:24,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-23 22:08:24,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:08:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 819 proven. 225 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-23 22:08:27,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 22:08:28,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:08:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160015140] [2023-12-23 22:08:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160015140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 22:08:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1185251409] [2023-12-23 22:08:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:08:28,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 22:08:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 22:08:28,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 22:08:28,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 22:08:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:08:30,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-23 22:08:30,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:08:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 819 proven. 225 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-23 22:08:33,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 22:08:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1185251409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 22:08:33,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 22:08:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2023-12-23 22:08:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711784223] [2023-12-23 22:08:33,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 22:08:33,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-23 22:08:33,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:08:33,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-23 22:08:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-23 22:08:33,931 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 5 states have call successors, (29), 5 states have call predecessors, (29), 9 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-12-23 22:08:38,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 22:08:45,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 22:08:49,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 22:08:53,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 22:08:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:08:53,453 INFO L93 Difference]: Finished difference Result 221 states and 304 transitions. [2023-12-23 22:08:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-23 22:08:53,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 5 states have call successors, (29), 5 states have call predecessors, (29), 9 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 181 [2023-12-23 22:08:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:08:53,455 INFO L225 Difference]: With dead ends: 221 [2023-12-23 22:08:53,456 INFO L226 Difference]: Without dead ends: 125 [2023-12-23 22:08:53,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2023-12-23 22:08:53,457 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 133 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-23 22:08:53,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 288 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 521 Invalid, 3 Unknown, 0 Unchecked, 18.7s Time] [2023-12-23 22:08:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-23 22:08:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2023-12-23 22:08:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 79 states have internal predecessors, (96), 29 states have call successors, (29), 8 states have call predecessors, (29), 8 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-23 22:08:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2023-12-23 22:08:53,474 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 181 [2023-12-23 22:08:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:08:53,474 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2023-12-23 22:08:53,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 5 states have call successors, (29), 5 states have call predecessors, (29), 9 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-12-23 22:08:53,474 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2023-12-23 22:08:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-23 22:08:53,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:08:53,476 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:08:53,492 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 [2023-12-23 22:08:53,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 22:08:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 22:08:53,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:08:53,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:08:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash -942352781, now seen corresponding path program 1 times [2023-12-23 22:08:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:08:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690941596] [2023-12-23 22:08:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:08:53,892 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 [2023-12-23 22:08:53,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:08:53,893 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-23 22:08:53,925 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 (7)] Waiting until timeout for monitored process [2023-12-23 22:08:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:08:54,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-23 22:08:54,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:09:40,741 WARN L293 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:10:15,427 WARN L293 SmtUtils]: Spent 12.20s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:10:54,129 WARN L293 SmtUtils]: Spent 12.97s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:11:47,685 WARN L293 SmtUtils]: Spent 19.12s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:13:04,118 WARN L293 SmtUtils]: Spent 27.90s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:15:09,800 WARN L293 SmtUtils]: Spent 43.76s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:17:48,113 WARN L293 SmtUtils]: Spent 57.77s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 22:18:06,627 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 22:20:38,388 WARN L293 SmtUtils]: Spent 1.08m on a formula simplification that was a NOOP. DAG size: 126 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-23 22:22:17,907 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 [2023-12-23 22:22:17,914 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 22:22:17,972 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 22:22:17,983 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 (7)] Ended with exit code 0 [2023-12-23 22:22:18,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-12-23 22:22:18,173 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 182 with TraceHistMax 29,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. [2023-12-23 22:22:18,177 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-23 22:22:18,178 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 22:22:18,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 10:22:18 BoogieIcfgContainer [2023-12-23 22:22:18,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 22:22:18,180 INFO L158 Benchmark]: Toolchain (without parser) took 883917.92ms. Allocated memory is still 273.7MB. Free memory was 224.9MB in the beginning and 194.1MB in the end (delta: 30.8MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. [2023-12-23 22:22:18,180 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 208.7MB. Free memory was 161.6MB in the beginning and 161.4MB in the end (delta: 164.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 22:22:18,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.55ms. Allocated memory is still 273.7MB. Free memory was 224.6MB in the beginning and 207.1MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-23 22:22:18,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.71ms. Allocated memory is still 273.7MB. Free memory was 207.1MB in the beginning and 204.2MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 22:22:18,181 INFO L158 Benchmark]: Boogie Preprocessor took 47.04ms. Allocated memory is still 273.7MB. Free memory was 204.2MB in the beginning and 199.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-23 22:22:18,181 INFO L158 Benchmark]: RCFGBuilder took 7198.12ms. Allocated memory is still 273.7MB. Free memory was 199.4MB in the beginning and 228.7MB in the end (delta: -29.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-23 22:22:18,181 INFO L158 Benchmark]: TraceAbstraction took 876324.30ms. Allocated memory is still 273.7MB. Free memory was 228.1MB in the beginning and 194.1MB in the end (delta: 34.1MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2023-12-23 22:22:18,182 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 208.7MB. Free memory was 161.6MB in the beginning and 161.4MB in the end (delta: 164.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 297.55ms. Allocated memory is still 273.7MB. Free memory was 224.6MB in the beginning and 207.1MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.71ms. Allocated memory is still 273.7MB. Free memory was 207.1MB in the beginning and 204.2MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.04ms. Allocated memory is still 273.7MB. Free memory was 204.2MB in the beginning and 199.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 7198.12ms. Allocated memory is still 273.7MB. Free memory was 199.4MB in the beginning and 228.7MB in the end (delta: -29.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 876324.30ms. Allocated memory is still 273.7MB. Free memory was 228.1MB in the beginning and 194.1MB in the end (delta: 34.1MB). Peak memory consumption was 34.1MB. 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 182 with TraceHistMax 29,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.3s, OverallIterations: 5, TraceHistogramMax: 29, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 555 SdHoareTripleChecker+Valid, 51.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 526 mSDsluCounter, 987 SdHoareTripleChecker+Invalid, 50.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 570 mSDsCounter, 207 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1035 IncrementalHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 207 mSolverCounterUnsat, 417 mSDtfsCounter, 1035 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1521 GetRequests, 1463 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 905 NumberOfCodeBlocks, 905 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1260 ConstructedInterpolants, 7 QuantifiedInterpolants, 8319 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1500 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 10858/11368 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