/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-8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-df9f019-m [2024-11-05 19:47:43,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 19:47:43,104 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 19:47:43,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 19:47:43,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 19:47:43,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 19:47:43,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 19:47:43,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 19:47:43,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 19:47:43,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 19:47:43,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 19:47:43,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 19:47:43,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 19:47:43,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 19:47:43,126 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 19:47:43,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 19:47:43,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 19:47:43,127 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-05 19:47:43,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-05 19:47:43,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 19:47:43,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 19:47:43,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 19:47:43,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 19:47:43,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 19:47:43,129 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 19:47:43,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 19:47:43,129 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 19:47:43,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-05 19:47:43,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 19:47:43,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 19:47:43,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 19:47:43,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 19:47:43,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 19:47:43,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 19:47:43,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 19:47:43,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 19:47:43,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 19:47:43,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 19:47:43,132 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 19:47:43,132 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 19:47:43,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 19:47:43,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 19:47:43,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 19:47:43,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 19:47:43,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:47:43,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 19:47:43,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 19:47:43,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 19:47:43,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 19:47:43,394 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 19:47:43,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2024-11-05 19:47:44,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 19:47:45,038 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 19:47:45,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2024-11-05 19:47:45,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3825773dd/2452ed5c529248eb81b93a5e24cdb358/FLAG42fb88eb5 [2024-11-05 19:47:45,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3825773dd/2452ed5c529248eb81b93a5e24cdb358 [2024-11-05 19:47:45,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 19:47:45,418 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 19:47:45,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 19:47:45,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 19:47:45,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 19:47:45,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:45,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a745a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45, skipping insertion in model container [2024-11-05 19:47:45,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:45,465 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 19:47:45,619 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-8.i[915,928] [2024-11-05 19:47:45,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 19:47:45,765 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 19:47:45,777 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-8.i[915,928] [2024-11-05 19:47:45,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 19:47:45,907 INFO L204 MainTranslator]: Completed translation [2024-11-05 19:47:45,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45 WrapperNode [2024-11-05 19:47:45,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 19:47:45,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 19:47:45,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 19:47:45,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 19:47:45,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:45,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:45,970 INFO L138 Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 336 [2024-11-05 19:47:45,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 19:47:45,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 19:47:45,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 19:47:45,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 19:47:45,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:45,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:45,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,002 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 19:47:46,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 19:47:46,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 19:47:46,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 19:47:46,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 19:47:46,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (1/1) ... [2024-11-05 19:47:46,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 19:47:46,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 19:47:46,063 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 19:47:46,070 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 19:47:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 19:47:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 19:47:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 19:47:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 19:47:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 19:47:46,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 19:47:46,196 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 19:47:46,198 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 19:47:50,616 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-05 19:47:50,616 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 19:47:50,628 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 19:47:50,629 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-05 19:47:50,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:47:50 BoogieIcfgContainer [2024-11-05 19:47:50,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 19:47:50,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 19:47:50,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 19:47:50,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 19:47:50,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:47:45" (1/3) ... [2024-11-05 19:47:50,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3cc024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:47:50, skipping insertion in model container [2024-11-05 19:47:50,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:47:45" (2/3) ... [2024-11-05 19:47:50,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3cc024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:47:50, skipping insertion in model container [2024-11-05 19:47:50,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:47:50" (3/3) ... [2024-11-05 19:47:50,636 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-8.i [2024-11-05 19:47:50,649 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 19:47:50,649 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 19:47:50,699 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 19:47:50,705 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;@1a2ce1b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 19:47:50,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 19:47:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 102 states have internal predecessors, (153), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-05 19:47:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-05 19:47:50,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:47:50,733 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:50,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:47:50,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:47:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1272070780, now seen corresponding path program 1 times [2024-11-05 19:47:50,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:47:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874989829] [2024-11-05 19:47:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:47:50,747 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 19:47:50,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:47:50,753 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 19:47:50,755 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 19:47:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:47:51,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 19:47:51,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:47:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-05 19:47:51,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:47:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-05 19:47:52,646 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:47:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874989829] [2024-11-05 19:47:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [874989829] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 19:47:52,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 19:47:52,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 19:47:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616666106] [2024-11-05 19:47:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 19:47:52,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 19:47:52,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:47:52,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 19:47:52,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 19:47:52,673 INFO L87 Difference]: Start difference. First operand has 154 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 102 states have internal predecessors, (153), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-05 19:47:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:47:52,704 INFO L93 Difference]: Finished difference Result 301 states and 550 transitions. [2024-11-05 19:47:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 19:47:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 322 [2024-11-05 19:47:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:47:52,713 INFO L225 Difference]: With dead ends: 301 [2024-11-05 19:47:52,713 INFO L226 Difference]: Without dead ends: 150 [2024-11-05 19:47:52,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 642 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 19:47:52,754 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 19:47:52,755 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 19:47:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-05 19:47:52,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-05 19:47:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.489795918367347) internal successors, (146), 98 states have internal predecessors, (146), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-05 19:47:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 246 transitions. [2024-11-05 19:47:52,866 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 246 transitions. Word has length 322 [2024-11-05 19:47:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:47:52,867 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 246 transitions. [2024-11-05 19:47:52,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-05 19:47:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 246 transitions. [2024-11-05 19:47:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-05 19:47:52,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:47:52,882 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:52,904 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 [2024-11-05 19:47:53,085 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 19:47:53,086 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:47:53,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:47:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 963929796, now seen corresponding path program 1 times [2024-11-05 19:47:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:47:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110732170] [2024-11-05 19:47:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:47:53,087 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 19:47:53,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:47:53,092 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 19:47:53,101 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 19:47:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:47:53,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 19:47:53,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:47:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-05 19:47:53,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:47:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-05 19:47:54,758 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:47:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110732170] [2024-11-05 19:47:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [110732170] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 19:47:54,759 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 19:47:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-05 19:47:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530054536] [2024-11-05 19:47:54,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 19:47:54,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-05 19:47:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:47:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-05 19:47:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 19:47:54,763 INFO L87 Difference]: Start difference. First operand 150 states and 246 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-05 19:47:59,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:48:00,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:48:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:48:01,051 INFO L93 Difference]: Finished difference Result 431 states and 706 transitions. [2024-11-05 19:48:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 19:48:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 322 [2024-11-05 19:48:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:48:01,056 INFO L225 Difference]: With dead ends: 431 [2024-11-05 19:48:01,056 INFO L226 Difference]: Without dead ends: 284 [2024-11-05 19:48:01,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 19:48:01,058 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 211 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-05 19:48:01,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 623 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2024-11-05 19:48:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-05 19:48:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 282. [2024-11-05 19:48:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 179 states have (on average 1.3966480446927374) internal successors, (250), 179 states have internal predecessors, (250), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-05 19:48:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 450 transitions. [2024-11-05 19:48:01,087 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 450 transitions. Word has length 322 [2024-11-05 19:48:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:48:01,088 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 450 transitions. [2024-11-05 19:48:01,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-05 19:48:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 450 transitions. [2024-11-05 19:48:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-05 19:48:01,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:48:01,092 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:01,114 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 19:48:01,296 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 19:48:01,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:48:01,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:48:01,298 INFO L85 PathProgramCache]: Analyzing trace with hash -215528324, now seen corresponding path program 1 times [2024-11-05 19:48:01,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:48:01,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568884615] [2024-11-05 19:48:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:48:01,299 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 19:48:01,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:48:01,302 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 19:48:01,305 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 19:48:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:48:01,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 19:48:01,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:48:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-05 19:48:05,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:48:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-05 19:48:07,415 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:48:07,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568884615] [2024-11-05 19:48:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1568884615] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 19:48:07,416 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 19:48:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-05 19:48:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514751608] [2024-11-05 19:48:07,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 19:48:07,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-05 19:48:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:48:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-05 19:48:07,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 19:48:07,423 INFO L87 Difference]: Start difference. First operand 282 states and 450 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-05 19:48:11,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:48:14,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:48:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:48:14,558 INFO L93 Difference]: Finished difference Result 837 states and 1340 transitions. [2024-11-05 19:48:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 19:48:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 322 [2024-11-05 19:48:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:48:14,609 INFO L225 Difference]: With dead ends: 837 [2024-11-05 19:48:14,610 INFO L226 Difference]: Without dead ends: 558 [2024-11-05 19:48:14,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 640 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 19:48:14,611 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 80 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-05 19:48:14,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 444 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-05 19:48:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-05 19:48:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 546. [2024-11-05 19:48:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 341 states have (on average 1.3929618768328447) internal successors, (475), 341 states have internal predecessors, (475), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-05 19:48:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 875 transitions. [2024-11-05 19:48:14,665 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 875 transitions. Word has length 322 [2024-11-05 19:48:14,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:48:14,666 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 875 transitions. [2024-11-05 19:48:14,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-05 19:48:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 875 transitions. [2024-11-05 19:48:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-05 19:48:14,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:48:14,669 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:14,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-05 19:48:14,873 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 [2024-11-05 19:48:14,874 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:48:14,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:48:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash 207173502, now seen corresponding path program 1 times [2024-11-05 19:48:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:48:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057971980] [2024-11-05 19:48:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:48:14,875 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 19:48:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:48:14,877 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) [2024-11-05 19:48:14,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-05 19:48:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:48:15,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 19:48:15,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:48:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1985 proven. 210 refuted. 0 times theorem prover too weak. 2705 trivial. 0 not checked. [2024-11-05 19:48:21,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:48:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 78 proven. 213 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2024-11-05 19:48:26,212 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:48:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057971980] [2024-11-05 19:48:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1057971980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:48:26,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:48:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-11-05 19:48:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487542051] [2024-11-05 19:48:26,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:48:26,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-05 19:48:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:48:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-05 19:48:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-05 19:48:26,221 INFO L87 Difference]: Start difference. First operand 546 states and 875 transitions. Second operand has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 5 states have call successors, (100), 4 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) [2024-11-05 19:48:30,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:48:35,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-05 19:48:47,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-05 19:48:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:48:48,658 INFO L93 Difference]: Finished difference Result 1372 states and 2173 transitions. [2024-11-05 19:48:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 19:48:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 5 states have call successors, (100), 4 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) Word has length 322 [2024-11-05 19:48:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:48:48,664 INFO L225 Difference]: With dead ends: 1372 [2024-11-05 19:48:48,664 INFO L226 Difference]: Without dead ends: 829 [2024-11-05 19:48:48,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 629 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=275, Unknown=0, NotChecked=0, Total=462 [2024-11-05 19:48:48,666 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 720 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2024-11-05 19:48:48,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 947 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2024-11-05 19:48:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2024-11-05 19:48:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 562. [2024-11-05 19:48:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 353 states have (on average 1.3711048158640227) internal successors, (484), 353 states have internal predecessors, (484), 200 states have call successors, (200), 8 states have call predecessors, (200), 8 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-05 19:48:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 884 transitions. [2024-11-05 19:48:48,712 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 884 transitions. Word has length 322 [2024-11-05 19:48:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:48:48,713 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 884 transitions. [2024-11-05 19:48:48,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 5 states have call successors, (100), 4 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) [2024-11-05 19:48:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 884 transitions. [2024-11-05 19:48:48,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-05 19:48:48,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:48:48,716 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:48,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-05 19:48:48,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:48:48,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:48:48,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:48:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1786971204, now seen corresponding path program 1 times [2024-11-05 19:48:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:48:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496506547] [2024-11-05 19:48:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:48:48,921 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 19:48:48,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:48:48,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 19:48:48,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-05 19:48:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:48:49,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 19:48:49,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:48:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2443 proven. 84 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2024-11-05 19:48:53,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:48:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 63 proven. 84 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-05 19:48:58,433 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:48:58,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496506547] [2024-11-05 19:48:58,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [496506547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:48:58,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:48:58,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-05 19:48:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538663133] [2024-11-05 19:48:58,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:48:58,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 19:48:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:48:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 19:48:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-05 19:48:58,436 INFO L87 Difference]: Start difference. First operand 562 states and 884 transitions. Second operand has 14 states, 14 states have (on average 9.857142857142858) internal successors, (138), 14 states have internal predecessors, (138), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2024-11-05 19:49:09,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 19:49:14,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-05 19:49:16,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]