/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 16:07:06,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 16:07:06,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 16:07:06,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 16:07:06,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 16:07:06,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 16:07:06,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 16:07:06,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 16:07:06,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 16:07:06,594 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 16:07:06,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 16:07:06,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 16:07:06,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 16:07:06,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 16:07:06,595 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 16:07:06,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 16:07:06,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 16:07:06,596 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 16:07:06,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 16:07:06,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 16:07:06,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 16:07:06,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 16:07:06,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 16:07:06,597 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 16:07:06,598 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 16:07:06,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 16:07:06,598 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 16:07:06,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 16:07:06,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 16:07:06,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 16:07:06,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 16:07:06,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 16:07:06,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 16:07:06,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 16:07:06,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:07:06,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 16:07:06,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 16:07:06,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 16:07:06,601 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 16:07:06,601 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 16:07:06,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 16:07:06,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 16:07:06,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 16:07:06,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 16:07:06,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 16:07:06,602 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 16:07:06,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 16:07:06,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 16:07:06,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 16:07:06,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 16:07:06,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 16:07:06,821 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 16:07:06,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-20.i [2023-12-23 16:07:07,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 16:07:08,151 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 16:07:08,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-20.i [2023-12-23 16:07:08,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173a2ee9c/368e1ea38a594d25b618b6f32c89e9df/FLAG20d0da038 [2023-12-23 16:07:08,168 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173a2ee9c/368e1ea38a594d25b618b6f32c89e9df [2023-12-23 16:07:08,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 16:07:08,171 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 16:07:08,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 16:07:08,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 16:07:08,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 16:07:08,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca370aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08, skipping insertion in model container [2023-12-23 16:07:08,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,210 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 16:07:08,307 WARN L239 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_fillercode_fillercodestructure_filler-ps-co_file-20.i[919,932] [2023-12-23 16:07:08,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:07:08,438 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 16:07:08,447 WARN L239 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_fillercode_fillercodestructure_filler-ps-co_file-20.i[919,932] [2023-12-23 16:07:08,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:07:08,495 INFO L206 MainTranslator]: Completed translation [2023-12-23 16:07:08,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08 WrapperNode [2023-12-23 16:07:08,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 16:07:08,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 16:07:08,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 16:07:08,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 16:07:08,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,582 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 197 [2023-12-23 16:07:08,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 16:07:08,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 16:07:08,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 16:07:08,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 16:07:08,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,607 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]. [2023-12-23 16:07:08,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 16:07:08,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 16:07:08,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 16:07:08,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 16:07:08,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (1/1) ... [2023-12-23 16:07:08,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:07:08,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 16:07:08,669 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) [2023-12-23 16:07:08,688 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 [2023-12-23 16:07:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 16:07:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 16:07:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 16:07:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 16:07:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 16:07:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 16:07:08,763 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 16:07:08,765 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 16:07:23,678 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 16:07:23,707 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 16:07:23,707 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 16:07:23,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:07:23 BoogieIcfgContainer [2023-12-23 16:07:23,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 16:07:23,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 16:07:23,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 16:07:23,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 16:07:23,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:07:08" (1/3) ... [2023-12-23 16:07:23,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7f5d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:07:23, skipping insertion in model container [2023-12-23 16:07:23,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:08" (2/3) ... [2023-12-23 16:07:23,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7f5d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:07:23, skipping insertion in model container [2023-12-23 16:07:23,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:07:23" (3/3) ... [2023-12-23 16:07:23,713 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-20.i [2023-12-23 16:07:23,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 16:07:23,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 16:07:23,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 16:07:23,761 INFO L357 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, mHoare=true, 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;@634e7418, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 16:07:23,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 16:07:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 48 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 16:07:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-23 16:07:23,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:07:23,777 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:07:23,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:07:23,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:07:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash 541292312, now seen corresponding path program 1 times [2023-12-23 16:07:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:07:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383056178] [2023-12-23 16:07:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:23,791 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 [2023-12-23 16:07:23,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:07:23,793 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) [2023-12-23 16:07:23,812 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 [2023-12-23 16:07:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:24,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 16:07:24,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:07:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 924 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2023-12-23 16:07:24,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:07:24,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:07:24,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383056178] [2023-12-23 16:07:24,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383056178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:07:24,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:07:24,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:07:24,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067679279] [2023-12-23 16:07:24,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:07:24,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 16:07:24,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:07:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 16:07:24,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:07:24,406 INFO L87 Difference]: Start difference. First operand has 81 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 48 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 16:07:28,621 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 [] [2023-12-23 16:07:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:07:28,622 INFO L93 Difference]: Finished difference Result 159 states and 291 transitions. [2023-12-23 16:07:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 16:07:28,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 191 [2023-12-23 16:07:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:07:28,696 INFO L225 Difference]: With dead ends: 159 [2023-12-23 16:07:28,696 INFO L226 Difference]: Without dead ends: 79 [2023-12-23 16:07:28,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:07:28,701 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-23 16:07:28,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-23 16:07:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-23 16:07:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-23 16:07:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 16:07:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2023-12-23 16:07:28,733 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 191 [2023-12-23 16:07:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:07:28,733 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2023-12-23 16:07:28,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 16:07:28,733 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2023-12-23 16:07:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-23 16:07:28,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:07:28,736 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:07:28,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 16:07:28,942 WARN L477 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 [2023-12-23 16:07:28,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:07:28,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:07:28,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1048752450, now seen corresponding path program 1 times [2023-12-23 16:07:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:07:28,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152807905] [2023-12-23 16:07:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:28,945 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 [2023-12-23 16:07:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:07:28,953 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) [2023-12-23 16:07:28,954 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 [2023-12-23 16:07:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:29,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 16:07:29,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:07:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 16:07:33,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:07:33,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:07:33,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152807905] [2023-12-23 16:07:33,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152807905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:07:33,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:07:33,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:07:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961083484] [2023-12-23 16:07:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:07:33,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:07:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:07:33,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:07:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:07:33,734 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 16:07:38,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 16:07:44,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 16:07:49,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:07:52,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 16:07:57,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 16:08:03,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 16:08:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:08:03,515 INFO L93 Difference]: Finished difference Result 235 states and 373 transitions. [2023-12-23 16:08:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:08:03,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-23 16:08:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:08:03,518 INFO L225 Difference]: With dead ends: 235 [2023-12-23 16:08:03,518 INFO L226 Difference]: Without dead ends: 157 [2023-12-23 16:08:03,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:08:03,523 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 35 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2023-12-23 16:08:03,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 244 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 29.8s Time] [2023-12-23 16:08:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-23 16:08:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2023-12-23 16:08:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 90 states have internal predecessors, (123), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-23 16:08:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 247 transitions. [2023-12-23 16:08:03,541 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 247 transitions. Word has length 192 [2023-12-23 16:08:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:08:03,542 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 247 transitions. [2023-12-23 16:08:03,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 16:08:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 247 transitions. [2023-12-23 16:08:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 16:08:03,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:08:03,544 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:08:03,559 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 [2023-12-23 16:08:03,756 WARN L477 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 [2023-12-23 16:08:03,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:08:03,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:08:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash -120311611, now seen corresponding path program 1 times [2023-12-23 16:08:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:08:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493440161] [2023-12-23 16:08:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:08:03,773 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 [2023-12-23 16:08:03,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:08:03,774 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) [2023-12-23 16:08:03,785 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 [2023-12-23 16:08:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:08:04,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 16:08:04,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:08:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 16:08:13,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:08:13,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:08:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493440161] [2023-12-23 16:08:13,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493440161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:08:13,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:08:13,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:08:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595718035] [2023-12-23 16:08:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:08:13,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:08:13,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:08:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:08:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:08:13,021 INFO L87 Difference]: Start difference. First operand 155 states and 247 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 16:08:19,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:08:20,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:08:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:08:21,081 INFO L93 Difference]: Finished difference Result 372 states and 593 transitions. [2023-12-23 16:08:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:08:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193 [2023-12-23 16:08:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:08:21,095 INFO L225 Difference]: With dead ends: 372 [2023-12-23 16:08:21,095 INFO L226 Difference]: Without dead ends: 218 [2023-12-23 16:08:21,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:08:21,097 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 9 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-23 16:08:21,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 228 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2023-12-23 16:08:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-23 16:08:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2023-12-23 16:08:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 119 states have (on average 1.3109243697478992) internal successors, (156), 119 states have internal predecessors, (156), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-23 16:08:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 342 transitions. [2023-12-23 16:08:21,119 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 342 transitions. Word has length 193 [2023-12-23 16:08:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:08:21,120 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 342 transitions. [2023-12-23 16:08:21,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 16:08:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 342 transitions. [2023-12-23 16:08:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 16:08:21,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:08:21,122 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:08:21,138 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 [2023-12-23 16:08:21,322 WARN L477 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 [2023-12-23 16:08:21,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:08:21,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:08:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1400175289, now seen corresponding path program 1 times [2023-12-23 16:08:21,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:08:21,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929438279] [2023-12-23 16:08:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:08:21,324 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 [2023-12-23 16:08:21,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:08:21,327 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) [2023-12-23 16:08:21,328 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 [2023-12-23 16:08:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:08:21,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 16:08:21,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:08:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 16:08:21,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:08:21,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:08:21,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929438279] [2023-12-23 16:08:21,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929438279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:08:21,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:08:21,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 16:08:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819240804] [2023-12-23 16:08:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:08:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:08:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:08:21,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:08:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:08:21,944 INFO L87 Difference]: Start difference. First operand 216 states and 342 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 16:08:26,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:08:30,469 WARN L539 Checker$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 [] [2023-12-23 16:08:34,477 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 [] [2023-12-23 16:08:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:08:34,485 INFO L93 Difference]: Finished difference Result 394 states and 623 transitions. [2023-12-23 16:08:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:08:34,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193 [2023-12-23 16:08:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:08:34,569 INFO L225 Difference]: With dead ends: 394 [2023-12-23 16:08:34,569 INFO L226 Difference]: Without dead ends: 240 [2023-12-23 16:08:34,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:08:34,571 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 16 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-23 16:08:34,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 242 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2023-12-23 16:08:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-23 16:08:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 222. [2023-12-23 16:08:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 125 states have (on average 1.312) internal successors, (164), 125 states have internal predecessors, (164), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-23 16:08:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 350 transitions. [2023-12-23 16:08:34,608 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 350 transitions. Word has length 193 [2023-12-23 16:08:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:08:34,609 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 350 transitions. [2023-12-23 16:08:34,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 16:08:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 350 transitions. [2023-12-23 16:08:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-23 16:08:34,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:08:34,610 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:08:34,622 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 [2023-12-23 16:08:34,811 WARN L477 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 [2023-12-23 16:08:34,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:08:34,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:08:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1007148279, now seen corresponding path program 1 times [2023-12-23 16:08:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:08:34,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779876307] [2023-12-23 16:08:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:08:34,813 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 [2023-12-23 16:08:34,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:08:34,840 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) [2023-12-23 16:08:34,841 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 [2023-12-23 16:08:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:08:35,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 16:08:35,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:08:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 498 proven. 12 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2023-12-23 16:08:46,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 16:08:49,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:08:49,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779876307] [2023-12-23 16:08:49,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779876307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 16:08:49,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [715055205] [2023-12-23 16:08:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:08:49,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 16:08:49,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 16:08:49,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 16:08:49,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 16:08:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:08:53,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-23 16:08:53,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:11:04,755 WARN L293 SmtUtils]: Spent 11.04s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:11:58,192 WARN L293 SmtUtils]: Spent 20.20s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:12:57,207 WARN L293 SmtUtils]: Spent 22.61s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:14:22,343 WARN L293 SmtUtils]: Spent 31.08s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:16:35,155 WARN L293 SmtUtils]: Spent 35.37s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)