/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_amount250_file-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-df9f019-m [2024-11-05 19:40:07,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 19:40:07,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-05 19:40:07,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 19:40:07,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 19:40:07,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 19:40:07,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 19:40:07,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 19:40:07,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 19:40:07,351 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 19:40:07,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 19:40:07,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 19:40:07,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 19:40:07,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 19:40:07,354 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 19:40:07,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 19:40:07,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 19:40:07,355 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-05 19:40:07,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-05 19:40:07,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 19:40:07,356 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 19:40:07,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 19:40:07,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 19:40:07,359 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 19:40:07,360 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 19:40:07,360 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 19:40:07,360 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 19:40:07,360 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-05 19:40:07,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 19:40:07,361 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 19:40:07,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 19:40:07,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 19:40:07,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 19:40:07,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 19:40:07,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 19:40:07,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 19:40:07,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 19:40:07,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 19:40:07,363 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 19:40:07,363 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 19:40:07,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 19:40:07,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 19:40:07,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 19:40:07,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 19:40:07,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:40:07,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 19:40:07,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 19:40:07,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 19:40:07,625 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 19:40:07,625 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 19:40:07,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2024-11-05 19:40:09,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 19:40:09,448 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 19:40:09,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2024-11-05 19:40:09,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/377160708/229d5d45765d4222aad82f1382b0cc4b/FLAG744383cf2 [2024-11-05 19:40:09,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/377160708/229d5d45765d4222aad82f1382b0cc4b [2024-11-05 19:40:09,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 19:40:09,757 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 19:40:09,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 19:40:09,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 19:40:09,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 19:40:09,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:40:09" (1/1) ... [2024-11-05 19:40:09,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bfa40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:09, skipping insertion in model container [2024-11-05 19:40:09,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:40:09" (1/1) ... [2024-11-05 19:40:09,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 19:40:09,986 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_amount250_file-27.i[916,929] [2024-11-05 19:40:10,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 19:40:10,176 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 19:40:10,187 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_amount250_file-27.i[916,929] [2024-11-05 19:40:10,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 19:40:10,293 INFO L204 MainTranslator]: Completed translation [2024-11-05 19:40:10,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10 WrapperNode [2024-11-05 19:40:10,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 19:40:10,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 19:40:10,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 19:40:10,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 19:40:10,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,378 INFO L138 Inliner]: procedures = 27, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 362 [2024-11-05 19:40:10,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 19:40:10,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 19:40:10,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 19:40:10,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 19:40:10,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,433 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]. [2024-11-05 19:40:10,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 19:40:10,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 19:40:10,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 19:40:10,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 19:40:10,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (1/1) ... [2024-11-05 19:40:10,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 19:40:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 19:40:10,537 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) [2024-11-05 19:40:10,540 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 [2024-11-05 19:40:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 19:40:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 19:40:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 19:40:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 19:40:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 19:40:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 19:40:10,725 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 19:40:10,728 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 19:40:24,956 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-05 19:40:24,956 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 19:40:24,981 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 19:40:24,981 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-05 19:40:24,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:40:24 BoogieIcfgContainer [2024-11-05 19:40:24,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 19:40:24,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 19:40:24,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 19:40:24,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 19:40:24,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:40:09" (1/3) ... [2024-11-05 19:40:24,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c50f44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:40:24, skipping insertion in model container [2024-11-05 19:40:24,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:10" (2/3) ... [2024-11-05 19:40:24,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c50f44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:40:24, skipping insertion in model container [2024-11-05 19:40:24,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:40:24" (3/3) ... [2024-11-05 19:40:24,994 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-27.i [2024-11-05 19:40:25,016 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 19:40:25,016 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 19:40:25,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 19:40:25,119 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;@5732c085, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 19:40:25,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 19:40:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 106 states have internal predecessors, (155), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-05 19:40:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-05 19:40:25,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:40:25,157 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:40:25,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:40:25,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:40:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1720319167, now seen corresponding path program 1 times [2024-11-05 19:40:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:40:25,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750625653] [2024-11-05 19:40:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:40:25,177 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 [2024-11-05 19:40:25,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:40:25,182 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) [2024-11-05 19:40:25,184 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 [2024-11-05 19:40:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:40:26,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 19:40:26,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:40:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1816 proven. 0 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2024-11-05 19:40:26,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:40:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2024-11-05 19:40:28,414 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:40:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750625653] [2024-11-05 19:40:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [750625653] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 19:40:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 19:40:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 19:40:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71257844] [2024-11-05 19:40:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 19:40:28,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 19:40:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:40:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 19:40:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 19:40:28,450 INFO L87 Difference]: Start difference. First operand has 159 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 106 states have internal predecessors, (155), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-05 19:40:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:40:28,493 INFO L93 Difference]: Finished difference Result 310 states and 557 transitions. [2024-11-05 19:40:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 19:40:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 331 [2024-11-05 19:40:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:40:28,504 INFO L225 Difference]: With dead ends: 310 [2024-11-05 19:40:28,504 INFO L226 Difference]: Without dead ends: 154 [2024-11-05 19:40:28,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 19:40:28,513 INFO L432 NwaCegarLoop]: 246 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, 246 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 [2024-11-05 19:40:28,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 19:40:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-05 19:40:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-05 19:40:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 101 states have internal predecessors, (144), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-05 19:40:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 246 transitions. [2024-11-05 19:40:28,578 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 246 transitions. Word has length 331 [2024-11-05 19:40:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:40:28,579 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 246 transitions. [2024-11-05 19:40:28,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-05 19:40:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 246 transitions. [2024-11-05 19:40:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-05 19:40:28,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:40:28,587 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:40:28,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-05 19:40:28,788 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 [2024-11-05 19:40:28,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:40:28,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:40:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash -883202369, now seen corresponding path program 1 times [2024-11-05 19:40:28,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:40:28,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032923380] [2024-11-05 19:40:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:40:28,790 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 [2024-11-05 19:40:28,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:40:28,794 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) [2024-11-05 19:40:28,795 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 [2024-11-05 19:40:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:40:29,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 19:40:29,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:40:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2468 proven. 57 refuted. 0 times theorem prover too weak. 2575 trivial. 0 not checked. [2024-11-05 19:40:32,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:40:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 93 proven. 57 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2024-11-05 19:40:36,243 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:40:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032923380] [2024-11-05 19:40:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2032923380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:40:36,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:40:36,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-05 19:40:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679020396] [2024-11-05 19:40:36,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:40:36,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 19:40:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:40:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 19:40:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-05 19:40:36,248 INFO L87 Difference]: Start difference. First operand 154 states and 246 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-05 19:40:44,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:40:48,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:40:52,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:40:55,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:40:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:40:55,135 INFO L93 Difference]: Finished difference Result 311 states and 494 transitions. [2024-11-05 19:40:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 19:40:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 332 [2024-11-05 19:40:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:40:55,262 INFO L225 Difference]: With dead ends: 311 [2024-11-05 19:40:55,263 INFO L226 Difference]: Without dead ends: 160 [2024-11-05 19:40:55,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 655 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-05 19:40:55,265 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 144 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-05 19:40:55,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 638 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 343 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2024-11-05 19:40:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-05 19:40:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-11-05 19:40:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 51 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-05 19:40:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 247 transitions. [2024-11-05 19:40:55,290 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 247 transitions. Word has length 332 [2024-11-05 19:40:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:40:55,292 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 247 transitions. [2024-11-05 19:40:55,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-05 19:40:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 247 transitions. [2024-11-05 19:40:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-05 19:40:55,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:40:55,297 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:40:55,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-05 19:40:55,498 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 [2024-11-05 19:40:55,499 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:40:55,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:40:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -860570115, now seen corresponding path program 1 times [2024-11-05 19:40:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:40:55,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74031561] [2024-11-05 19:40:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:40:55,500 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 [2024-11-05 19:40:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:40:55,502 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) [2024-11-05 19:40:55,504 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 [2024-11-05 19:40:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:40:56,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-05 19:40:56,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:41:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2597 proven. 51 refuted. 0 times theorem prover too weak. 2452 trivial. 0 not checked. [2024-11-05 19:41:04,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:41:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2024-11-05 19:41:10,521 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:41:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74031561] [2024-11-05 19:41:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [74031561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:41:10,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:41:10,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2024-11-05 19:41:10,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223442726] [2024-11-05 19:41:10,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:41:10,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-05 19:41:10,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:41:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-05 19:41:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-05 19:41:10,527 INFO L87 Difference]: Start difference. First operand 158 states and 247 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 19 states have internal predecessors, (140), 4 states have call successors, (70), 3 states have call predecessors, (70), 6 states have return successors, (71), 5 states have call predecessors, (71), 4 states have call successors, (71) [2024-11-05 19:41:28,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:41:32,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:41:36,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:41:40,277 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 []