/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver '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' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 07:55:32,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 07:55:32,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 07:55:32,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 07:55:32,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 07:55:32,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 07:55:32,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 07:55:32,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 07:55:32,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 07:55:32,354 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 07:55:32,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 07:55:32,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 07:55:32,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 07:55:32,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 07:55:32,357 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 07:55:32,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 07:55:32,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 07:55:32,358 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 07:55:32,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 07:55:32,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 07:55:32,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 07:55:32,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 07:55:32,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 07:55:32,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 07:55:32,364 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 07:55:32,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 07:55:32,364 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 07:55:32,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 07:55:32,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 07:55:32,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 07:55:32,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 07:55:32,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 07:55:32,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 07:55:32,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 07:55:32,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:55:32,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 07:55:32,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 07:55:32,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 07:55:32,368 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 07:55:32,368 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 07:55:32,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 07:55:32,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 07:55:32,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 07:55:32,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 07:55:32,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 07:55:32,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 07:55:32,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 07:55:32,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 07:55:32,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 07:55:32,620 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 07:55:32,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-33.i [2024-11-03 07:55:34,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 07:55:34,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 07:55:34,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-33.i [2024-11-03 07:55:34,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4acf42d43/4c30965d0d1e46c6811d9e1a3309c45a/FLAG8f1f51855 [2024-11-03 07:55:34,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4acf42d43/4c30965d0d1e46c6811d9e1a3309c45a [2024-11-03 07:55:34,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 07:55:34,299 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 07:55:34,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 07:55:34,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 07:55:34,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 07:55:34,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733a2b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34, skipping insertion in model container [2024-11-03 07:55:34,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 07:55:34,500 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-33.i[916,929] [2024-11-03 07:55:34,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:55:34,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 07:55:34,622 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-33.i[916,929] [2024-11-03 07:55:34,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:55:34,681 INFO L204 MainTranslator]: Completed translation [2024-11-03 07:55:34,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34 WrapperNode [2024-11-03 07:55:34,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 07:55:34,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 07:55:34,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 07:55:34,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 07:55:34,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,754 INFO L138 Inliner]: procedures = 27, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 234 [2024-11-03 07:55:34,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 07:55:34,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 07:55:34,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 07:55:34,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 07:55:34,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,801 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]. [2024-11-03 07:55:34,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 07:55:34,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 07:55:34,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 07:55:34,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 07:55:34,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (1/1) ... [2024-11-03 07:55:34,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:55:34,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 07:55:34,901 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) [2024-11-03 07:55:34,906 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 [2024-11-03 07:55:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 07:55:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 07:55:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 07:55:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 07:55:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 07:55:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 07:55:35,047 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 07:55:35,049 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 07:55:40,408 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-03 07:55:40,409 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 07:55:40,428 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 07:55:40,428 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 07:55:40,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:55:40 BoogieIcfgContainer [2024-11-03 07:55:40,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 07:55:40,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 07:55:40,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 07:55:40,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 07:55:40,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 07:55:34" (1/3) ... [2024-11-03 07:55:40,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337b4606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:55:40, skipping insertion in model container [2024-11-03 07:55:40,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:55:34" (2/3) ... [2024-11-03 07:55:40,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337b4606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:55:40, skipping insertion in model container [2024-11-03 07:55:40,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:55:40" (3/3) ... [2024-11-03 07:55:40,441 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-33.i [2024-11-03 07:55:40,456 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 07:55:40,457 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 07:55:40,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 07:55:40,520 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;@6c978230, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 07:55:40,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 07:55:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 63 states have internal predecessors, (83), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-03 07:55:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-03 07:55:40,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:55:40,546 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:55:40,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:55:40,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:55:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1838682336, now seen corresponding path program 1 times [2024-11-03 07:55:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:55:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080969798] [2024-11-03 07:55:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:55:40,566 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 [2024-11-03 07:55:40,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 07:55:40,569 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) [2024-11-03 07:55:40,571 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 [2024-11-03 07:55:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:55:41,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 07:55:41,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:55:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 1898 trivial. 0 not checked. [2024-11-03 07:55:41,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:55:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-03 07:55:41,581 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:55:41,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080969798] [2024-11-03 07:55:41,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1080969798] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 07:55:41,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 07:55:41,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-03 07:55:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808080427] [2024-11-03 07:55:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 07:55:41,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 07:55:41,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:55:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 07:55:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 07:55:41,612 INFO L87 Difference]: Start difference. First operand has 103 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 63 states have internal predecessors, (83), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-03 07:55:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:55:41,644 INFO L93 Difference]: Finished difference Result 199 states and 350 transitions. [2024-11-03 07:55:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 07:55:41,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 239 [2024-11-03 07:55:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:55:41,654 INFO L225 Difference]: With dead ends: 199 [2024-11-03 07:55:41,654 INFO L226 Difference]: Without dead ends: 99 [2024-11-03 07:55:41,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 07:55:41,668 INFO L432 NwaCegarLoop]: 152 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, 152 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 [2024-11-03 07:55:41,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:55:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-03 07:55:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-03 07:55:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-03 07:55:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 152 transitions. [2024-11-03 07:55:41,731 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 152 transitions. Word has length 239 [2024-11-03 07:55:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:55:41,731 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 152 transitions. [2024-11-03 07:55:41,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-03 07:55:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 152 transitions. [2024-11-03 07:55:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-03 07:55:41,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:55:41,737 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:55:41,754 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 [2024-11-03 07:55:41,938 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 [2024-11-03 07:55:41,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:55:41,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:55:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash 131254948, now seen corresponding path program 1 times [2024-11-03 07:55:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:55:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052023486] [2024-11-03 07:55:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:55:41,941 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 [2024-11-03 07:55:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 07:55:41,944 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) [2024-11-03 07:55:41,945 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 [2024-11-03 07:55:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:55:42,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-03 07:55:42,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:55:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1954 proven. 195 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-11-03 07:55:45,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:55:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 75 proven. 36 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-03 07:55:47,055 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:55:47,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052023486] [2024-11-03 07:55:47,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1052023486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:55:47,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:55:47,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2024-11-03 07:55:47,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948694112] [2024-11-03 07:55:47,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:55:47,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 07:55:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:55:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 07:55:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-03 07:55:47,063 INFO L87 Difference]: Start difference. First operand 99 states and 152 transitions. Second operand has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 5 states have call successors, (72), 4 states have call predecessors, (72), 8 states have return successors, (73), 5 states have call predecessors, (73), 5 states have call successors, (73) [2024-11-03 07:55:56,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:55:57,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:01,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:04,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:08,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:12,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:17,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:39,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-03 07:56:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:56:53,607 INFO L93 Difference]: Finished difference Result 484 states and 686 transitions. [2024-11-03 07:56:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-03 07:56:53,608 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 5 states have call successors, (72), 4 states have call predecessors, (72), 8 states have return successors, (73), 5 states have call predecessors, (73), 5 states have call successors, (73) Word has length 239 [2024-11-03 07:56:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:56:53,613 INFO L225 Difference]: With dead ends: 484 [2024-11-03 07:56:53,613 INFO L226 Difference]: Without dead ends: 388 [2024-11-03 07:56:53,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=1379, Invalid=5929, Unknown=2, NotChecked=0, Total=7310 [2024-11-03 07:56:53,620 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 572 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 487 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.5s IncrementalHoareTripleChecker+Time [2024-11-03 07:56:53,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1099 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 2000 Invalid, 4 Unknown, 0 Unchecked, 44.5s Time] [2024-11-03 07:56:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-03 07:56:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 271. [2024-11-03 07:56:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.15527950310559) internal successors, (186), 164 states have internal predecessors, (186), 94 states have call successors, (94), 15 states have call predecessors, (94), 15 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-03 07:56:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 374 transitions. [2024-11-03 07:56:53,699 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 374 transitions. Word has length 239 [2024-11-03 07:56:53,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:56:53,700 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 374 transitions. [2024-11-03 07:56:53,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 5 states have call successors, (72), 4 states have call predecessors, (72), 8 states have return successors, (73), 5 states have call predecessors, (73), 5 states have call successors, (73) [2024-11-03 07:56:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 374 transitions. [2024-11-03 07:56:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-03 07:56:53,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:56:53,708 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:56:53,724 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 [2024-11-03 07:56:53,908 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 [2024-11-03 07:56:53,909 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:56:53,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:56:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash 129407906, now seen corresponding path program 1 times [2024-11-03 07:56:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:56:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291939652] [2024-11-03 07:56:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:56:53,911 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 [2024-11-03 07:56:53,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 07:56:53,912 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) [2024-11-03 07:56:53,914 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 [2024-11-03 07:56:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:56:54,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 07:56:54,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:56:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-03 07:56:55,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:56:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-03 07:56:57,753 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:56:57,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291939652] [2024-11-03 07:56:57,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [291939652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:56:57,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:56:57,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 07:56:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839321697] [2024-11-03 07:56:57,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:56:57,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 07:56:57,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:56:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 07:56:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-03 07:56:57,756 INFO L87 Difference]: Start difference. First operand 271 states and 374 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-03 07:57:04,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 07:57:07,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 07:57:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:57:08,885 INFO L93 Difference]: Finished difference Result 599 states and 820 transitions. [2024-11-03 07:57:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 07:57:08,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) Word has length 239 [2024-11-03 07:57:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:57:08,892 INFO L225 Difference]: With dead ends: 599 [2024-11-03 07:57:08,892 INFO L226 Difference]: Without dead ends: 370 [2024-11-03 07:57:08,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2024-11-03 07:57:08,894 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 166 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 153 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-03 07:57:08,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 513 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2024-11-03 07:57:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-03 07:57:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 310. [2024-11-03 07:57:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 184 states have (on average 1.1195652173913044) internal successors, (206), 187 states have internal predecessors, (206), 104 states have call successors, (104), 21 states have call predecessors, (104), 21 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-03 07:57:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 414 transitions. [2024-11-03 07:57:08,964 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 414 transitions. Word has length 239 [2024-11-03 07:57:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:57:08,965 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 414 transitions. [2024-11-03 07:57:08,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-03 07:57:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 414 transitions. [2024-11-03 07:57:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-03 07:57:08,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:57:08,969 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:57:08,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-03 07:57:09,169 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 [2024-11-03 07:57:09,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:57:09,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:57:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash 809466276, now seen corresponding path program 1 times [2024-11-03 07:57:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:57:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276033536] [2024-11-03 07:57:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:57:09,171 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 [2024-11-03 07:57:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 07:57:09,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-03 07:57:09,175 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