/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-86.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 08:12:29,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 08:12:29,410 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 08:12:29,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 08:12:29,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 08:12:29,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 08:12:29,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 08:12:29,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 08:12:29,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 08:12:29,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 08:12:29,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 08:12:29,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 08:12:29,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 08:12:29,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 08:12:29,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 08:12:29,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 08:12:29,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 08:12:29,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 08:12:29,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 08:12:29,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 08:12:29,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 08:12:29,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 08:12:29,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 08:12:29,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 08:12:29,448 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 08:12:29,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 08:12:29,448 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 08:12:29,449 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 08:12:29,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 08:12:29,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 08:12:29,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 08:12:29,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 08:12:29,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 08:12:29,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 08:12:29,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:12:29,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 08:12:29,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 08:12:29,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 08:12:29,451 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 08:12:29,451 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 08:12:29,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 08:12:29,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 08:12:29,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 08:12:29,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 08:12:29,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 08:12:29,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 08:12:29,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 08:12:29,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 08:12:29,677 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 08:12:29,677 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 08:12:29,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-86.i [2024-11-06 08:12:30,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 08:12:31,184 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 08:12:31,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-86.i [2024-11-06 08:12:31,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1fca36be/86300acf20c743ec9ffc6fab064e1785/FLAG115ffd297 [2024-11-06 08:12:31,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1fca36be/86300acf20c743ec9ffc6fab064e1785 [2024-11-06 08:12:31,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 08:12:31,215 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 08:12:31,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 08:12:31,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 08:12:31,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 08:12:31,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7548b17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31, skipping insertion in model container [2024-11-06 08:12:31,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 08:12:31,398 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-86.i[916,929] [2024-11-06 08:12:31,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:12:31,465 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 08:12:31,474 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-86.i[916,929] [2024-11-06 08:12:31,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:12:31,523 INFO L204 MainTranslator]: Completed translation [2024-11-06 08:12:31,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31 WrapperNode [2024-11-06 08:12:31,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 08:12:31,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 08:12:31,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 08:12:31,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 08:12:31,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,579 INFO L138 Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2024-11-06 08:12:31,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 08:12:31,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 08:12:31,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 08:12:31,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 08:12:31,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,620 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 08:12:31,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 08:12:31,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 08:12:31,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 08:12:31,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 08:12:31,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (1/1) ... [2024-11-06 08:12:31,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:12:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:12:31,684 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 08:12:31,697 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 08:12:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 08:12:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 08:12:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 08:12:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 08:12:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 08:12:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 08:12:31,800 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 08:12:31,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 08:12:43,997 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-06 08:12:43,997 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 08:12:44,018 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 08:12:44,019 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 08:12:44,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:12:44 BoogieIcfgContainer [2024-11-06 08:12:44,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 08:12:44,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 08:12:44,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 08:12:44,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 08:12:44,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:12:31" (1/3) ... [2024-11-06 08:12:44,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127956d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:12:44, skipping insertion in model container [2024-11-06 08:12:44,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:12:31" (2/3) ... [2024-11-06 08:12:44,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127956d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:12:44, skipping insertion in model container [2024-11-06 08:12:44,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:12:44" (3/3) ... [2024-11-06 08:12:44,032 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-86.i [2024-11-06 08:12:44,056 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 08:12:44,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 08:12:44,141 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 08:12:44,146 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;@2a57928d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 08:12:44,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 08:12:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-06 08:12:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-06 08:12:44,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:12:44,164 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:44,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:12:44,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:12:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1288294001, now seen corresponding path program 1 times [2024-11-06 08:12:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:12:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336181034] [2024-11-06 08:12:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:12:44,179 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 08:12:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:12:44,183 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 08:12:44,184 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 08:12:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:12:44,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 08:12:44,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:12:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2024-11-06 08:12:44,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:12:44,635 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:12:44,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336181034] [2024-11-06 08:12:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336181034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:12:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:12:44,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 08:12:44,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943041460] [2024-11-06 08:12:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:12:44,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 08:12:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:12:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 08:12:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:12:44,665 INFO L87 Difference]: Start difference. First operand has 85 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-06 08:12:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:12:44,692 INFO L93 Difference]: Finished difference Result 163 states and 283 transitions. [2024-11-06 08:12:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 08:12:44,694 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 165 [2024-11-06 08:12:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:12:44,699 INFO L225 Difference]: With dead ends: 163 [2024-11-06 08:12:44,699 INFO L226 Difference]: Without dead ends: 81 [2024-11-06 08:12:44,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 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 08:12:44,705 INFO L432 NwaCegarLoop]: 125 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, 125 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 08:12:44,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 08:12:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-06 08:12:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-06 08:12:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-06 08:12:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 125 transitions. [2024-11-06 08:12:44,746 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 125 transitions. Word has length 165 [2024-11-06 08:12:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:12:44,747 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 125 transitions. [2024-11-06 08:12:44,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-06 08:12:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 125 transitions. [2024-11-06 08:12:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-06 08:12:44,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:12:44,751 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:44,767 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 08:12:44,956 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 08:12:44,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:12:44,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:12:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash -488342105, now seen corresponding path program 1 times [2024-11-06 08:12:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:12:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143151900] [2024-11-06 08:12:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:12:44,960 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 08:12:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:12:44,961 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 08:12:44,962 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 08:12:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:12:45,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 08:12:45,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:12:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-06 08:12:47,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:12:47,672 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:12:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143151900] [2024-11-06 08:12:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143151900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:12:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:12:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 08:12:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988871749] [2024-11-06 08:12:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:12:47,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 08:12:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:12:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 08:12:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 08:12:47,675 INFO L87 Difference]: Start difference. First operand 81 states and 125 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-06 08:12:51,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:12:56,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:12:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:12:56,227 INFO L93 Difference]: Finished difference Result 236 states and 367 transitions. [2024-11-06 08:12:56,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 08:12:56,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 165 [2024-11-06 08:12:56,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:12:56,230 INFO L225 Difference]: With dead ends: 236 [2024-11-06 08:12:56,230 INFO L226 Difference]: Without dead ends: 158 [2024-11-06 08:12:56,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 08:12:56,239 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 40 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-06 08:12:56,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 230 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-06 08:12:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-06 08:12:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2024-11-06 08:12:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-06 08:12:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 238 transitions. [2024-11-06 08:12:56,275 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 238 transitions. Word has length 165 [2024-11-06 08:12:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:12:56,276 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 238 transitions. [2024-11-06 08:12:56,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-06 08:12:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 238 transitions. [2024-11-06 08:12:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-06 08:12:56,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:12:56,278 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:56,304 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 08:12:56,479 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 08:12:56,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:12:56,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:12:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1509410459, now seen corresponding path program 1 times [2024-11-06 08:12:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:12:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025334398] [2024-11-06 08:12:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:12:56,481 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 08:12:56,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:12:56,484 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 08:12:56,485 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 08:12:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:12:56,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 08:12:56,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:13:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 598 proven. 171 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-11-06 08:13:08,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:13:10,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:13:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025334398] [2024-11-06 08:13:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025334398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 08:13:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624533610] [2024-11-06 08:13:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:13:10,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 08:13:10,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:13:10,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 08:13:10,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 08:13:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:13:11,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-06 08:13:11,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:13:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 574 proven. 219 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2024-11-06 08:13:26,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:13:29,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624533610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 08:13:29,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:13:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 32 [2024-11-06 08:13:29,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906422599] [2024-11-06 08:13:29,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:13:29,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-06 08:13:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:13:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-06 08:13:29,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2024-11-06 08:13:29,640 INFO L87 Difference]: Start difference. First operand 155 states and 238 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 30 states have internal predecessors, (107), 9 states have call successors, (49), 9 states have call predecessors, (49), 13 states have return successors, (50), 9 states have call predecessors, (50), 9 states have call successors, (50) [2024-11-06 08:14:07,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 08:14:11,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 08:14:12,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 08:14:13,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]