/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 02:43:00,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 02:43:01,048 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 02:43:01,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 02:43:01,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 02:43:01,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 02:43:01,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 02:43:01,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 02:43:01,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 02:43:01,091 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 02:43:01,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 02:43:01,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 02:43:01,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 02:43:01,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 02:43:01,094 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 02:43:01,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 02:43:01,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 02:43:01,095 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 02:43:01,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 02:43:01,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 02:43:01,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 02:43:01,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 02:43:01,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 02:43:01,096 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 02:43:01,097 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 02:43:01,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 02:43:01,097 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 02:43:01,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 02:43:01,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 02:43:01,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 02:43:01,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 02:43:01,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 02:43:01,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 02:43:01,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 02:43:01,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 02:43:01,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 02:43:01,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 02:43:01,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 02:43:01,100 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 02:43:01,100 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 02:43:01,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 02:43:01,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 02:43:01,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 02:43:01,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 02:43:01,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 02:43:01,105 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 02:43:01,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 02:43:01,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 02:43:01,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 02:43:01,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 02:43:01,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 02:43:01,372 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 02:43:01,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-19.i [2023-12-24 02:43:02,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 02:43:02,838 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 02:43:02,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-19.i [2023-12-24 02:43:02,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87b617ca/2866db5af17943d7b57ecf3211a78357/FLAG8442d8cbf [2023-12-24 02:43:02,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87b617ca/2866db5af17943d7b57ecf3211a78357 [2023-12-24 02:43:02,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 02:43:02,862 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 02:43:02,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 02:43:02,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 02:43:02,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 02:43:02,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:43:02" (1/1) ... [2023-12-24 02:43:02,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5073f4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:02, skipping insertion in model container [2023-12-24 02:43:02,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:43:02" (1/1) ... [2023-12-24 02:43:02,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 02:43:03,025 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-19.i[915,928] [2023-12-24 02:43:03,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 02:43:03,094 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 02:43:03,103 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-19.i[915,928] [2023-12-24 02:43:03,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 02:43:03,157 INFO L206 MainTranslator]: Completed translation [2023-12-24 02:43:03,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03 WrapperNode [2023-12-24 02:43:03,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 02:43:03,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 02:43:03,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 02:43:03,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 02:43:03,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,205 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 146 [2023-12-24 02:43:03,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 02:43:03,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 02:43:03,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 02:43:03,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 02:43:03,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,230 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,245 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 02:43:03,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 02:43:03,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 02:43:03,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 02:43:03,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 02:43:03,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (1/1) ... [2023-12-24 02:43:03,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 02:43:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 02:43:03,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 02:43:03,338 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 02:43:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 02:43:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 02:43:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 02:43:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 02:43:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 02:43:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 02:43:03,443 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 02:43:03,445 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 02:43:17,283 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 02:43:17,342 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 02:43:17,342 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 02:43:17,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:43:17 BoogieIcfgContainer [2023-12-24 02:43:17,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 02:43:17,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 02:43:17,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 02:43:17,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 02:43:17,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:43:02" (1/3) ... [2023-12-24 02:43:17,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893c198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:43:17, skipping insertion in model container [2023-12-24 02:43:17,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:43:03" (2/3) ... [2023-12-24 02:43:17,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893c198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:43:17, skipping insertion in model container [2023-12-24 02:43:17,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:43:17" (3/3) ... [2023-12-24 02:43:17,354 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-19.i [2023-12-24 02:43:17,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 02:43:17,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 02:43:17,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 02:43:17,432 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;@1c008af2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 02:43:17,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 02:43:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 02:43:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 02:43:17,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:43:17,446 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:43:17,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:43:17,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:43:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2048630370, now seen corresponding path program 1 times [2023-12-24 02:43:17,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:43:17,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320074792] [2023-12-24 02:43:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:43:17,462 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 02:43:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:43:17,463 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 02:43:17,467 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 02:43:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:43:18,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 02:43:18,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:43:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-24 02:43:18,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:43:18,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:43:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320074792] [2023-12-24 02:43:18,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320074792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:43:18,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:43:18,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 02:43:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770914643] [2023-12-24 02:43:18,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:43:18,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 02:43:18,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:43:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 02:43:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 02:43:18,402 INFO L87 Difference]: Start difference. First operand has 59 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-24 02:43:23,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:43:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:43:24,148 INFO L93 Difference]: Finished difference Result 117 states and 205 transitions. [2023-12-24 02:43:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 02:43:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 138 [2023-12-24 02:43:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:43:24,156 INFO L225 Difference]: With dead ends: 117 [2023-12-24 02:43:24,157 INFO L226 Difference]: Without dead ends: 57 [2023-12-24 02:43:24,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 137 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 02:43:24,161 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 02:43:24,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 02:43:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-24 02:43:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-24 02:43:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 02:43:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2023-12-24 02:43:24,210 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 138 [2023-12-24 02:43:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:43:24,210 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2023-12-24 02:43:24,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-24 02:43:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2023-12-24 02:43:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 02:43:24,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:43:24,214 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:43:24,239 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 (2)] Forceful destruction successful, exit code 0 [2023-12-24 02:43:24,415 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 02:43:24,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:43:24,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:43:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1912002074, now seen corresponding path program 1 times [2023-12-24 02:43:24,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:43:24,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042601992] [2023-12-24 02:43:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:43:24,417 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 02:43:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:43:24,419 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 02:43:24,420 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 02:43:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:43:25,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 02:43:25,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:43:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 02:43:28,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:43:28,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:43:28,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042601992] [2023-12-24 02:43:28,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042601992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:43:28,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:43:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 02:43:28,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40951649] [2023-12-24 02:43:28,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:43:28,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 02:43:28,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:43:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 02:43:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 02:43:28,666 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-24 02:43:34,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:43:38,244 WARN L539 Checker$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 [] [2023-12-24 02:43:42,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:43:48,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:43:52,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:43:56,087 WARN L539 Checker$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 [] [2023-12-24 02:44:00,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:44:04,110 WARN L539 Checker$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 [] [2023-12-24 02:44:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:44:04,628 INFO L93 Difference]: Finished difference Result 193 states and 292 transitions. [2023-12-24 02:44:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 02:44:04,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 138 [2023-12-24 02:44:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:44:04,631 INFO L225 Difference]: With dead ends: 193 [2023-12-24 02:44:04,631 INFO L226 Difference]: Without dead ends: 137 [2023-12-24 02:44:04,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 02:44:04,635 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 75 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 49 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2023-12-24 02:44:04,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 267 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 35.8s Time] [2023-12-24 02:44:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-24 02:44:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2023-12-24 02:44:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 02:44:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 170 transitions. [2023-12-24 02:44:04,664 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 170 transitions. Word has length 138 [2023-12-24 02:44:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:44:04,664 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 170 transitions. [2023-12-24 02:44:04,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-24 02:44:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 170 transitions. [2023-12-24 02:44:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 02:44:04,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:44:04,667 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:44:04,692 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 02:44:04,880 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 02:44:04,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:44:04,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:44:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1796159208, now seen corresponding path program 1 times [2023-12-24 02:44:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:44:04,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834429641] [2023-12-24 02:44:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:44:04,882 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 02:44:04,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:44:04,884 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 02:44:04,887 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 02:44:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:44:05,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 02:44:05,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:44:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 02:44:09,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:44:09,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:44:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834429641] [2023-12-24 02:44:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834429641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:44:09,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:44:09,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 02:44:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031635634] [2023-12-24 02:44:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:44:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 02:44:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:44:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 02:44:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 02:44:09,249 INFO L87 Difference]: Start difference. First operand 111 states and 170 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-24 02:44:14,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:44:20,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:44:24,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:44:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:44:24,859 INFO L93 Difference]: Finished difference Result 331 states and 508 transitions. [2023-12-24 02:44:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 02:44:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 138 [2023-12-24 02:44:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:44:24,865 INFO L225 Difference]: With dead ends: 331 [2023-12-24 02:44:24,865 INFO L226 Difference]: Without dead ends: 221 [2023-12-24 02:44:24,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 02:44:24,868 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 21 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-12-24 02:44:24,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 159 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2023-12-24 02:44:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-24 02:44:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2023-12-24 02:44:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 126 states have (on average 1.253968253968254) internal successors, (158), 126 states have internal predecessors, (158), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 02:44:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 334 transitions. [2023-12-24 02:44:24,929 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 334 transitions. Word has length 138 [2023-12-24 02:44:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:44:24,930 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 334 transitions. [2023-12-24 02:44:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-24 02:44:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 334 transitions. [2023-12-24 02:44:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 02:44:24,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:44:24,938 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:44:24,965 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 (4)] Forceful destruction successful, exit code 0 [2023-12-24 02:44:25,165 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 02:44:25,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:44:25,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:44:25,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2054324646, now seen corresponding path program 1 times [2023-12-24 02:44:25,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:44:25,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335884652] [2023-12-24 02:44:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:44:25,168 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 02:44:25,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:44:25,174 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) [2023-12-24 02:44:25,208 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 [2023-12-24 02:44:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:44:26,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 02:44:26,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:44:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-24 02:44:26,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:44:26,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:44:26,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335884652] [2023-12-24 02:44:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335884652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:44:26,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:44:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 02:44:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782291831] [2023-12-24 02:44:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:44:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 02:44:26,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:44:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 02:44:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 02:44:26,347 INFO L87 Difference]: Start difference. First operand 219 states and 334 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-24 02:44:31,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 02:44:37,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 02:44:43,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 02:44:48,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 02:44:54,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 02:44:58,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:45:02,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 02:45:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:45:03,264 INFO L93 Difference]: Finished difference Result 639 states and 973 transitions. [2023-12-24 02:45:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 02:45:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 138 [2023-12-24 02:45:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:45:03,277 INFO L225 Difference]: With dead ends: 639 [2023-12-24 02:45:03,277 INFO L226 Difference]: Without dead ends: 421 [2023-12-24 02:45:03,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 02:45:03,280 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 80 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2023-12-24 02:45:03,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 219 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 36.8s Time] [2023-12-24 02:45:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-24 02:45:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 225. [2023-12-24 02:45:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 132 states have (on average 1.2651515151515151) internal successors, (167), 132 states have internal predecessors, (167), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 02:45:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 343 transitions. [2023-12-24 02:45:03,320 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 343 transitions. Word has length 138 [2023-12-24 02:45:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:45:03,321 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 343 transitions. [2023-12-24 02:45:03,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-24 02:45:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 343 transitions. [2023-12-24 02:45:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 02:45:03,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:45:03,323 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:45:03,350 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 [2023-12-24 02:45:03,547 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 [2023-12-24 02:45:03,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:45:03,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:45:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1560584280, now seen corresponding path program 1 times [2023-12-24 02:45:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:45:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223931006] [2023-12-24 02:45:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:45:03,550 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 02:45:03,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:45:03,551 INFO L229 MonitoredProcess]: Starting monitored process 6 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 02:45:03,562 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 (6)] Waiting until timeout for monitored process [2023-12-24 02:45:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:45:04,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 02:45:04,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:45:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 483 proven. 30 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-12-24 02:45:06,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:45:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-24 02:45:08,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:45:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223931006] [2023-12-24 02:45:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223931006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 02:45:08,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 02:45:08,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 02:45:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746540410] [2023-12-24 02:45:08,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 02:45:08,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 02:45:08,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:45:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 02:45:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 02:45:08,117 INFO L87 Difference]: Start difference. First operand 225 states and 343 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-24 02:45:16,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:45:20,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:45:24,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 02:45:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:45:24,584 INFO L93 Difference]: Finished difference Result 295 states and 441 transitions. [2023-12-24 02:45:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 02:45:24,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 138 [2023-12-24 02:45:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:45:24,586 INFO L225 Difference]: With dead ends: 295 [2023-12-24 02:45:24,586 INFO L226 Difference]: Without dead ends: 71 [2023-12-24 02:45:24,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-24 02:45:24,590 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 120 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 111 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-12-24 02:45:24,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 113 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 127 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2023-12-24 02:45:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-24 02:45:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2023-12-24 02:45:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-24 02:45:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2023-12-24 02:45:24,604 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 138 [2023-12-24 02:45:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:45:24,605 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2023-12-24 02:45:24,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-24 02:45:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2023-12-24 02:45:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 02:45:24,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:45:24,611 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:45:24,638 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 (6)] Forceful destruction successful, exit code 0 [2023-12-24 02:45:24,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 02:45:24,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:45:24,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:45:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1503325978, now seen corresponding path program 1 times [2023-12-24 02:45:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:45:24,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854251353] [2023-12-24 02:45:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:45:24,828 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 02:45:24,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:45:24,829 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) [2023-12-24 02:45:24,847 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 [2023-12-24 02:45:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:45:25,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 02:45:25,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:46:02,590 WARN L293 SmtUtils]: Spent 9.64s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-24 02:46:12,276 WARN L293 SmtUtils]: Spent 9.69s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-24 02:46:23,609 WARN L293 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-24 02:46:33,352 WARN L293 SmtUtils]: Spent 9.74s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-24 02:46:49,799 WARN L293 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:47:10,976 WARN L293 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:47:37,600 WARN L293 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 47 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)