/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-69.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 08:10:10,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 08:10:10,079 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-06 08:10:10,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 08:10:10,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 08:10:10,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 08:10:10,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 08:10:10,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 08:10:10,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 08:10:10,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 08:10:10,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 08:10:10,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 08:10:10,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 08:10:10,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 08:10:10,120 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 08:10:10,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 08:10:10,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 08:10:10,122 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 08:10:10,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 08:10:10,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 08:10:10,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 08:10:10,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 08:10:10,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 08:10:10,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 08:10:10,124 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 08:10:10,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 08:10:10,124 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 08:10:10,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 08:10:10,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 08:10:10,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 08:10:10,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 08:10:10,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 08:10:10,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 08:10:10,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 08:10:10,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:10:10,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 08:10:10,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 08:10:10,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 08:10:10,127 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 08:10:10,127 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 08:10:10,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 08:10:10,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 08:10:10,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 08:10:10,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 08:10:10,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 08:10:10,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 08:10:10,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 08:10:10,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 08:10:10,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 08:10:10,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 08:10:10,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-69.i [2024-11-06 08:10:11,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 08:10:11,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 08:10:11,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-69.i [2024-11-06 08:10:11,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14fec4474/2329c93e6f7c46978ecc6df692c41085/FLAG7389c9b6c [2024-11-06 08:10:12,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14fec4474/2329c93e6f7c46978ecc6df692c41085 [2024-11-06 08:10:12,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 08:10:12,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 08:10:12,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 08:10:12,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 08:10:12,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 08:10:12,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77004231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12, skipping insertion in model container [2024-11-06 08:10:12,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,378 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 08:10:12,555 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-69.i[916,929] [2024-11-06 08:10:12,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:10:12,650 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 08:10:12,662 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-69.i[916,929] [2024-11-06 08:10:12,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 08:10:12,717 INFO L204 MainTranslator]: Completed translation [2024-11-06 08:10:12,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12 WrapperNode [2024-11-06 08:10:12,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 08:10:12,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 08:10:12,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 08:10:12,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 08:10:12,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,763 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-11-06 08:10:12,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 08:10:12,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 08:10:12,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 08:10:12,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 08:10:12,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,800 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 08:10:12,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 08:10:12,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 08:10:12,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 08:10:12,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 08:10:12,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (1/1) ... [2024-11-06 08:10:12,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 08:10:12,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 08:10:12,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 08:10:12,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 08:10:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 08:10:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 08:10:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 08:10:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 08:10:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 08:10:12,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 08:10:12,993 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 08:10:12,995 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 08:10:27,604 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-06 08:10:27,605 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 08:10:27,618 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 08:10:27,618 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 08:10:27,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:10:27 BoogieIcfgContainer [2024-11-06 08:10:27,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 08:10:27,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 08:10:27,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 08:10:27,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 08:10:27,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:10:12" (1/3) ... [2024-11-06 08:10:27,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb6945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:10:27, skipping insertion in model container [2024-11-06 08:10:27,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:10:12" (2/3) ... [2024-11-06 08:10:27,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb6945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:10:27, skipping insertion in model container [2024-11-06 08:10:27,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:10:27" (3/3) ... [2024-11-06 08:10:27,626 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-69.i [2024-11-06 08:10:27,640 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 08:10:27,640 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 08:10:27,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 08:10:27,721 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;@75e87caf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 08:10:27,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 08:10:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-06 08:10:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-06 08:10:27,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:10:27,738 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:10:27,738 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:10:27,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:10:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1063871195, now seen corresponding path program 1 times [2024-11-06 08:10:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:10:27,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136980222] [2024-11-06 08:10:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:10:27,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:10:27,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:10:27,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-06 08:10:27,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-06 08:10:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:10:28,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 08:10:28,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:10:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2024-11-06 08:10:28,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 08:10:28,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:10:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136980222] [2024-11-06 08:10:28,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136980222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 08:10:28,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 08:10:28,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 08:10:28,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175618159] [2024-11-06 08:10:28,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 08:10:28,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 08:10:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:10:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 08:10:28,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:10:28,598 INFO L87 Difference]: Start difference. First operand has 87 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 57 states have internal predecessors, (83), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-06 08:10:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:10:28,638 INFO L93 Difference]: Finished difference Result 167 states and 300 transitions. [2024-11-06 08:10:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 08:10:28,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 177 [2024-11-06 08:10:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:10:28,648 INFO L225 Difference]: With dead ends: 167 [2024-11-06 08:10:28,648 INFO L226 Difference]: Without dead ends: 83 [2024-11-06 08:10:28,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 08:10:28,655 INFO L432 NwaCegarLoop]: 132 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, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 08:10:28,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 08:10:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-06 08:10:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-06 08:10:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-06 08:10:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 132 transitions. [2024-11-06 08:10:28,698 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 132 transitions. Word has length 177 [2024-11-06 08:10:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:10:28,699 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 132 transitions. [2024-11-06 08:10:28,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-06 08:10:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 132 transitions. [2024-11-06 08:10:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-06 08:10:28,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:10:28,704 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:10:28,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-06 08:10:28,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:10:28,905 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:10:28,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:10:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -112237409, now seen corresponding path program 1 times [2024-11-06 08:10:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:10:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911805932] [2024-11-06 08:10:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:10:28,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:10:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:10:28,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-06 08:10:28,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-06 08:10:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:10:29,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 08:10:29,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:10:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 573 proven. 18 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2024-11-06 08:10:30,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:10:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 63 proven. 18 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-06 08:10:32,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:10:32,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911805932] [2024-11-06 08:10:32,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911805932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:10:32,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:10:32,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-06 08:10:32,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311802694] [2024-11-06 08:10:32,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:10:32,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 08:10:32,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:10:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 08:10:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-06 08:10:32,937 INFO L87 Difference]: Start difference. First operand 83 states and 132 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-06 08:10:39,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:10:43,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:10:47,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:10:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:10:47,301 INFO L93 Difference]: Finished difference Result 171 states and 268 transitions. [2024-11-06 08:10:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 08:10:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 177 [2024-11-06 08:10:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:10:47,390 INFO L225 Difference]: With dead ends: 171 [2024-11-06 08:10:47,390 INFO L226 Difference]: Without dead ends: 91 [2024-11-06 08:10:47,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-06 08:10:47,393 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 153 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 51 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-06 08:10:47,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 234 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 153 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2024-11-06 08:10:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-06 08:10:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-06 08:10:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 56 states have internal predecessors, (78), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-06 08:10:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 134 transitions. [2024-11-06 08:10:47,409 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 134 transitions. Word has length 177 [2024-11-06 08:10:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:10:47,410 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 134 transitions. [2024-11-06 08:10:47,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-06 08:10:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 134 transitions. [2024-11-06 08:10:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-06 08:10:47,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:10:47,414 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:10:47,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-06 08:10:47,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:10:47,615 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:10:47,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:10:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1735493023, now seen corresponding path program 1 times [2024-11-06 08:10:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:10:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27386651] [2024-11-06 08:10:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:10:47,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:10:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:10:47,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-06 08:10:47,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-06 08:10:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:10:48,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 08:10:48,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 08:10:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 573 proven. 18 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2024-11-06 08:10:49,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 08:10:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 63 proven. 18 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-06 08:10:52,002 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 08:10:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27386651] [2024-11-06 08:10:52,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27386651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 08:10:52,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 08:10:52,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-06 08:10:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559299214] [2024-11-06 08:10:52,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 08:10:52,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 08:10:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 08:10:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 08:10:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-06 08:10:52,006 INFO L87 Difference]: Start difference. First operand 87 states and 134 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-06 08:10:59,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:03,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:07,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:11,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:15,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:19,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:23,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 08:11:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 08:11:24,154 INFO L93 Difference]: Finished difference Result 262 states and 402 transitions. [2024-11-06 08:11:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 08:11:24,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 177 [2024-11-06 08:11:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 08:11:24,158 INFO L225 Difference]: With dead ends: 262 [2024-11-06 08:11:24,158 INFO L226 Difference]: Without dead ends: 178 [2024-11-06 08:11:24,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-06 08:11:24,161 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 461 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 268 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2024-11-06 08:11:24,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 307 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 198 Invalid, 7 Unknown, 0 Unchecked, 31.0s Time] [2024-11-06 08:11:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-06 08:11:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 167. [2024-11-06 08:11:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-06 08:11:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 257 transitions. [2024-11-06 08:11:24,205 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 257 transitions. Word has length 177 [2024-11-06 08:11:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 08:11:24,206 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 257 transitions. [2024-11-06 08:11:24,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-06 08:11:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 257 transitions. [2024-11-06 08:11:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-06 08:11:24,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 08:11:24,210 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 08:11:24,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-06 08:11:24,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:11:24,411 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 08:11:24,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 08:11:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 926146397, now seen corresponding path program 1 times [2024-11-06 08:11:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 08:11:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116082019] [2024-11-06 08:11:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 08:11:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-06 08:11:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 08:11:24,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-06 08:11:24,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-06 08:11:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 08:11:25,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-06 08:11:25,123 INFO L278 TraceCheckSpWp]: Computing forward predicates...