/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 08:05:55,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 08:05:55,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-06 08:05:55,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 08:05:55,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 08:05:55,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 08:05:55,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 08:05:55,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 08:05:55,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 08:05:55,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 08:05:55,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 08:05:55,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 08:05:55,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 08:05:55,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 08:05:55,776 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 08:05:55,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 08:05:55,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 08:05:55,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 08:05:55,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 08:05:55,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 08:05:55,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 08:05:55,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 08:05:55,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 08:05:55,783 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 08:05:55,783 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 08:05:55,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 08:05:55,784 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 08:05:55,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 08:05:55,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 08:05:55,784 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 08:05:55,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 08:05:55,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 08:05:55,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 08:05:55,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 08:05:55,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:05:55,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 08:05:55,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 08:05:55,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 08:05:55,787 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 08:05:55,788 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 08:05:55,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 08:05:55,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 08:05:55,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 08:05:55,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 08:05:55,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 08:05:56,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 08:05:56,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 08:05:56,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 08:05:56,061 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 08:05:56,062 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 08:05:56,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i [2024-11-06 08:05:57,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 08:05:57,807 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 08:05:57,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i [2024-11-06 08:05:57,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a6ca97c5/ee2a5f0a94fe4519b5a398515286bfcb/FLAGb03a0cb34 [2024-11-06 08:05:57,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a6ca97c5/ee2a5f0a94fe4519b5a398515286bfcb [2024-11-06 08:05:57,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 08:05:57,845 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 08:05:57,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 08:05:57,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 08:05:57,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 08:05:57,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:05:57" (1/1) ... [2024-11-06 08:05:57,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e2cde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:57, skipping insertion in model container [2024-11-06 08:05:57,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:05:57" (1/1) ... [2024-11-06 08:05:57,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 08:05:58,067 WARN L250 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_operatoramount_amount100_file-39.i[916,929] [2024-11-06 08:05:58,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:05:58,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 08:05:58,170 WARN L250 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_operatoramount_amount100_file-39.i[916,929] [2024-11-06 08:05:58,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:05:58,259 INFO L204 MainTranslator]: Completed translation [2024-11-06 08:05:58,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58 WrapperNode [2024-11-06 08:05:58,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 08:05:58,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 08:05:58,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 08:05:58,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 08:05:58,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,307 INFO L138 Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 196 [2024-11-06 08:05:58,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 08:05:58,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 08:05:58,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 08:05:58,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 08:05:58,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,344 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]. [2024-11-06 08:05:58,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 08:05:58,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 08:05:58,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 08:05:58,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 08:05:58,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (1/1) ... [2024-11-06 08:05:58,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:05:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:05:58,431 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) [2024-11-06 08:05:58,434 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 [2024-11-06 08:05:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 08:05:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 08:05:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 08:05:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 08:05:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 08:05:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 08:05:58,580 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 08:05:58,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 08:06:03,918 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-06 08:06:03,918 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 08:06:03,932 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 08:06:03,933 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 08:06:03,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:06:03 BoogieIcfgContainer [2024-11-06 08:06:03,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 08:06:03,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 08:06:03,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 08:06:03,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 08:06:03,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:05:57" (1/3) ... [2024-11-06 08:06:03,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1888e1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:06:03, skipping insertion in model container [2024-11-06 08:06:03,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:05:58" (2/3) ... [2024-11-06 08:06:03,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1888e1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:06:03, skipping insertion in model container [2024-11-06 08:06:03,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:06:03" (3/3) ... [2024-11-06 08:06:03,946 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-39.i [2024-11-06 08:06:03,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 08:06:03,966 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 08:06:04,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 08:06:04,040 INFO L333 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, 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;@5ccf77f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 08:06:04,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 08:06:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 59 states have internal predecessors, (83), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 08:06:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-06 08:06:04,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:06:04,064 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:06:04,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:06:04,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:06:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1822079040, now seen corresponding path program 1 times [2024-11-06 08:06:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:06:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463132078] [2024-11-06 08:06:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:04,088 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 [2024-11-06 08:06:04,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:06:04,091 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) [2024-11-06 08:06:04,094 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 [2024-11-06 08:06:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:04,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 08:06:04,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:06:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2024-11-06 08:06:04,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:06:04,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:06:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463132078] [2024-11-06 08:06:04,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463132078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:06:04,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:06:04,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 08:06:04,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416971688] [2024-11-06 08:06:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:06:04,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 08:06:04,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:06:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 08:06:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:06:04,801 INFO L87 Difference]: Start difference. First operand has 85 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 59 states have internal predecessors, (83), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-06 08:06:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:06:04,845 INFO L93 Difference]: Finished difference Result 163 states and 280 transitions. [2024-11-06 08:06:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 08:06:04,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 163 [2024-11-06 08:06:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:06:04,855 INFO L225 Difference]: With dead ends: 163 [2024-11-06 08:06:04,856 INFO L226 Difference]: Without dead ends: 81 [2024-11-06 08:06:04,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:06:04,866 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 08:06:04,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 08:06:04,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-06 08:06:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-06 08:06:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 08:06:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 124 transitions. [2024-11-06 08:06:04,912 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 124 transitions. Word has length 163 [2024-11-06 08:06:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:06:04,912 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 124 transitions. [2024-11-06 08:06:04,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-06 08:06:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 124 transitions. [2024-11-06 08:06:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-06 08:06:04,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:06:04,917 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:06:04,939 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 [2024-11-06 08:06:05,118 WARN L453 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 [2024-11-06 08:06:05,118 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:06:05,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:06:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash 968921588, now seen corresponding path program 1 times [2024-11-06 08:06:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:06:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349425528] [2024-11-06 08:06:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:05,121 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 [2024-11-06 08:06:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:06:05,125 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) [2024-11-06 08:06:05,127 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 [2024-11-06 08:06:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:05,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 08:06:05,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:06:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 533 proven. 24 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2024-11-06 08:06:06,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:06:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 45 proven. 24 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-06 08:06:07,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:06:07,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349425528] [2024-11-06 08:06:07,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349425528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:06:07,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:06:07,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-06 08:06:07,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009023612] [2024-11-06 08:06:07,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:06:07,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 08:06:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:06:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 08:06:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-06 08:06:07,645 INFO L87 Difference]: Start difference. First operand 81 states and 124 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2024-11-06 08:06:13,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:06:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:06:13,466 INFO L93 Difference]: Finished difference Result 167 states and 252 transitions. [2024-11-06 08:06:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 08:06:13,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 163 [2024-11-06 08:06:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:06:13,504 INFO L225 Difference]: With dead ends: 167 [2024-11-06 08:06:13,505 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 08:06:13,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-06 08:06:13,507 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 207 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-06 08:06:13,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 221 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 145 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2024-11-06 08:06:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 08:06:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2024-11-06 08:06:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 58 states have internal predecessors, (77), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 08:06:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 125 transitions. [2024-11-06 08:06:13,526 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 125 transitions. Word has length 163 [2024-11-06 08:06:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:06:13,527 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 125 transitions. [2024-11-06 08:06:13,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2024-11-06 08:06:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 125 transitions. [2024-11-06 08:06:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-06 08:06:13,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:06:13,530 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:06:13,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-06 08:06:13,731 WARN L453 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 [2024-11-06 08:06:13,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:06:13,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:06:13,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1187776306, now seen corresponding path program 1 times [2024-11-06 08:06:13,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:06:13,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488669183] [2024-11-06 08:06:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:13,734 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 [2024-11-06 08:06:13,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:06:13,736 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) [2024-11-06 08:06:13,737 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 [2024-11-06 08:06:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:14,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 08:06:14,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:06:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 563 proven. 39 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-06 08:06:15,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:06:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-06 08:06:16,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:06:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488669183] [2024-11-06 08:06:16,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488669183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:06:16,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:06:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-06 08:06:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037787631] [2024-11-06 08:06:16,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:06:16,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 08:06:16,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:06:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 08:06:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 08:06:16,473 INFO L87 Difference]: Start difference. First operand 85 states and 125 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-06 08:06:21,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:06:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:06:21,222 INFO L93 Difference]: Finished difference Result 175 states and 254 transitions. [2024-11-06 08:06:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 08:06:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 163 [2024-11-06 08:06:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:06:21,263 INFO L225 Difference]: With dead ends: 175 [2024-11-06 08:06:21,263 INFO L226 Difference]: Without dead ends: 93 [2024-11-06 08:06:21,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-06 08:06:21,265 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 109 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-06 08:06:21,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 225 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-06 08:06:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-06 08:06:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-11-06 08:06:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 08:06:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2024-11-06 08:06:21,287 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 163 [2024-11-06 08:06:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:06:21,288 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2024-11-06 08:06:21,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-06 08:06:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2024-11-06 08:06:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-06 08:06:21,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:06:21,295 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:06:21,320 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 [2024-11-06 08:06:21,495 WARN L453 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 [2024-11-06 08:06:21,496 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:06:21,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:06:21,497 INFO L85 PathProgramCache]: Analyzing trace with hash 129487481, now seen corresponding path program 1 times [2024-11-06 08:06:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:06:21,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744703456] [2024-11-06 08:06:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:21,498 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 [2024-11-06 08:06:21,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:06:21,502 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) [2024-11-06 08:06:21,503 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 [2024-11-06 08:06:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:21,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 08:06:21,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:06:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2024-11-06 08:06:25,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:06:27,485 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:06:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744703456] [2024-11-06 08:06:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744703456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 08:06:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838618133] [2024-11-06 08:06:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:27,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 08:06:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:06:27,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 08:06:27,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 08:06:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:27,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 08:06:27,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:06:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2024-11-06 08:06:31,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:06:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838618133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 08:06:31,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:06:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-06 08:06:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085754192] [2024-11-06 08:06:31,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:06:31,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 08:06:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:06:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 08:06:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-06 08:06:31,962 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-06 08:06:38,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:06:40,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:06:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:06:43,686 INFO L93 Difference]: Finished difference Result 293 states and 403 transitions. [2024-11-06 08:06:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 08:06:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 164 [2024-11-06 08:06:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:06:43,693 INFO L225 Difference]: With dead ends: 293 [2024-11-06 08:06:43,695 INFO L226 Difference]: Without dead ends: 207 [2024-11-06 08:06:43,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2024-11-06 08:06:43,696 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 263 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-06 08:06:43,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 539 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2024-11-06 08:06:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-06 08:06:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 189. [2024-11-06 08:06:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 130 states have (on average 1.2538461538461538) internal successors, (163), 130 states have internal predecessors, (163), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-06 08:06:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 259 transitions. [2024-11-06 08:06:43,738 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 259 transitions. Word has length 164 [2024-11-06 08:06:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:06:43,739 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 259 transitions. [2024-11-06 08:06:43,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-06 08:06:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 259 transitions. [2024-11-06 08:06:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-06 08:06:43,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:06:43,746 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:06:43,766 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 (5)] Ended with exit code 0 [2024-11-06 08:06:43,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 08:06:44,146 WARN L453 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/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 08:06:44,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:06:44,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:06:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash 348342199, now seen corresponding path program 1 times [2024-11-06 08:06:44,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:06:44,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898438317] [2024-11-06 08:06:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:44,148 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 [2024-11-06 08:06:44,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:06:44,150 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) [2024-11-06 08:06:44,152 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 [2024-11-06 08:06:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:44,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 08:06:44,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:06:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-06 08:06:45,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:06:45,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:06:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898438317] [2024-11-06 08:06:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898438317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:06:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:06:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 08:06:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591388661] [2024-11-06 08:06:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:06:45,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 08:06:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:06:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 08:06:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 08:06:45,926 INFO L87 Difference]: Start difference. First operand 189 states and 259 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-06 08:06:50,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:06:54,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:06:58,172 WARN L539 Checker$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 [] [2024-11-06 08:06:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:06:59,084 INFO L93 Difference]: Finished difference Result 377 states and 516 transitions. [2024-11-06 08:06:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 08:06:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 164 [2024-11-06 08:06:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:06:59,124 INFO L225 Difference]: With dead ends: 377 [2024-11-06 08:06:59,124 INFO L226 Difference]: Without dead ends: 191 [2024-11-06 08:06:59,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 08:06:59,126 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 32 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-06 08:06:59,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 415 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2024-11-06 08:06:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-06 08:06:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 97. [2024-11-06 08:06:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 states have internal predecessors, (83), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 08:06:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2024-11-06 08:06:59,148 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 164 [2024-11-06 08:06:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:06:59,148 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2024-11-06 08:06:59,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-06 08:06:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2024-11-06 08:06:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-06 08:06:59,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:06:59,150 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:06:59,171 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 (7)] Forceful destruction successful, exit code 0 [2024-11-06 08:06:59,354 WARN L453 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 [2024-11-06 08:06:59,355 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:06:59,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:06:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1966534190, now seen corresponding path program 1 times [2024-11-06 08:06:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:06:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293951913] [2024-11-06 08:06:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:06:59,356 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 [2024-11-06 08:06:59,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:06:59,358 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2024-11-06 08:06:59,359 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 (8)] Waiting until timeout for monitored process [2024-11-06 08:06:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:06:59,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 08:06:59,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:07:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 585 proven. 201 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-06 08:07:07,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:07:09,425 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:07:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293951913] [2024-11-06 08:07:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293951913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 08:07:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423026492] [2024-11-06 08:07:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:07:09,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 08:07:09,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:07:09,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 08:07:09,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 08:07:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:07:10,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 08:07:10,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:07:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 585 proven. 201 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-06 08:07:16,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:07:18,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423026492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 08:07:18,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:07:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2024-11-06 08:07:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934763896] [2024-11-06 08:07:18,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:07:18,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 08:07:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:07:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 08:07:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-06 08:07:18,104 INFO L87 Difference]: Start difference. First operand 97 states and 131 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24)