/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-pe-cn_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:53:32,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:53:32,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:53:32,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:53:32,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:53:32,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:53:32,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:53:32,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:53:32,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:53:32,462 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:53:32,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:53:32,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:53:32,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:53:32,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:53:32,464 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:53:32,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:53:32,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:53:32,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:53:32,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:53:32,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:53:32,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:53:32,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:53:32,466 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:53:32,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:53:32,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:53:32,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:53:32,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:53:32,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:53:32,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:53:32,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:53:32,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:53:32,469 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:53:32,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:53:32,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:53:32,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:53:32,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:53:32,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:53:32,660 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:53:32,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i [2023-12-16 11:53:33,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:53:33,864 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:53:33,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i [2023-12-16 11:53:33,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b23dc2f9/f941478c8e604302a1441e36e3039827/FLAG5ba791da1 [2023-12-16 11:53:33,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b23dc2f9/f941478c8e604302a1441e36e3039827 [2023-12-16 11:53:33,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:53:33,894 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:53:33,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:53:33,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:53:33,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:53:33,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:53:33" (1/1) ... [2023-12-16 11:53:33,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353b0301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:33, skipping insertion in model container [2023-12-16 11:53:33,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:53:33" (1/1) ... [2023-12-16 11:53:33,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:53:34,024 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-pe-cn_file-58.i[919,932] [2023-12-16 11:53:34,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:53:34,089 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:53:34,097 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-pe-cn_file-58.i[919,932] [2023-12-16 11:53:34,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:53:34,142 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:53:34,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34 WrapperNode [2023-12-16 11:53:34,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:53:34,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:53:34,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:53:34,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:53:34,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,189 INFO L138 Inliner]: procedures = 27, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 233 [2023-12-16 11:53:34,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:53:34,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:53:34,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:53:34,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:53:34,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,209 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,225 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]. [2023-12-16 11:53:34,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:53:34,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:53:34,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:53:34,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:53:34,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (1/1) ... [2023-12-16 11:53:34,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:53:34,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:53:34,284 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) [2023-12-16 11:53:34,293 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 [2023-12-16 11:53:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:53:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:53:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:53:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:53:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:53:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:53:34,364 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:53:34,366 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:53:34,751 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:53:34,800 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:53:34,800 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:53:34,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:53:34 BoogieIcfgContainer [2023-12-16 11:53:34,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:53:34,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:53:34,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:53:34,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:53:34,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:53:33" (1/3) ... [2023-12-16 11:53:34,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ffe5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:53:34, skipping insertion in model container [2023-12-16 11:53:34,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:34" (2/3) ... [2023-12-16 11:53:34,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ffe5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:53:34, skipping insertion in model container [2023-12-16 11:53:34,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:53:34" (3/3) ... [2023-12-16 11:53:34,808 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-58.i [2023-12-16 11:53:34,820 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:53:34,820 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:53:34,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:53:34,863 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;@10b6bd65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:53:34,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:53:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 56 states have internal predecessors, (80), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 11:53:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 11:53:34,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:53:34,889 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:53:34,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:53:34,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:53:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2011200981, now seen corresponding path program 1 times [2023-12-16 11:53:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:53:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996461560] [2023-12-16 11:53:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:34,909 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 [2023-12-16 11:53:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:53:34,912 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) [2023-12-16 11:53:34,919 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 [2023-12-16 11:53:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:35,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:53:35,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:53:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 2920 trivial. 0 not checked. [2023-12-16 11:53:35,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:53:35,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:53:35,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996461560] [2023-12-16 11:53:35,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996461560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:53:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:53:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:53:35,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796878856] [2023-12-16 11:53:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:53:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:53:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:53:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:53:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:53:35,296 INFO L87 Difference]: Start difference. First operand has 101 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 56 states have internal predecessors, (80), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:53:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:53:35,349 INFO L93 Difference]: Finished difference Result 199 states and 373 transitions. [2023-12-16 11:53:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:53:35,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 257 [2023-12-16 11:53:35,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:53:35,362 INFO L225 Difference]: With dead ends: 199 [2023-12-16 11:53:35,362 INFO L226 Difference]: Without dead ends: 99 [2023-12-16 11:53:35,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:53:35,367 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:53:35,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 11:53:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-16 11:53:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-12-16 11:53:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 11:53:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 161 transitions. [2023-12-16 11:53:35,403 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 161 transitions. Word has length 257 [2023-12-16 11:53:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:53:35,404 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 161 transitions. [2023-12-16 11:53:35,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:53:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 161 transitions. [2023-12-16 11:53:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 11:53:35,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:53:35,407 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:53:35,416 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 [2023-12-16 11:53:35,614 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 [2023-12-16 11:53:35,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:53:35,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:53:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1270171057, now seen corresponding path program 1 times [2023-12-16 11:53:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:53:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592912902] [2023-12-16 11:53:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:35,616 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 [2023-12-16 11:53:35,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:53:35,617 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) [2023-12-16 11:53:35,621 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 (3)] Waiting until timeout for monitored process [2023-12-16 11:53:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:35,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:53:35,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:53:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1716 proven. 45 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2023-12-16 11:53:35,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:53:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-16 11:53:36,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:53:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592912902] [2023-12-16 11:53:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592912902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:53:36,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:53:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 11:53:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594986314] [2023-12-16 11:53:36,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:53:36,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 11:53:36,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:53:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 11:53:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:53:36,203 INFO L87 Difference]: Start difference. First operand 99 states and 161 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-16 11:53:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:53:36,924 INFO L93 Difference]: Finished difference Result 311 states and 495 transitions. [2023-12-16 11:53:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 11:53:36,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 257 [2023-12-16 11:53:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:53:36,928 INFO L225 Difference]: With dead ends: 311 [2023-12-16 11:53:36,928 INFO L226 Difference]: Without dead ends: 213 [2023-12-16 11:53:36,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 506 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-16 11:53:36,930 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 251 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:53:36,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 527 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 11:53:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-16 11:53:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2023-12-16 11:53:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 112 states have (on average 1.3482142857142858) internal successors, (151), 112 states have internal predecessors, (151), 86 states have call successors, (86), 4 states have call predecessors, (86), 4 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-16 11:53:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 323 transitions. [2023-12-16 11:53:36,987 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 323 transitions. Word has length 257 [2023-12-16 11:53:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:53:36,989 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 323 transitions. [2023-12-16 11:53:36,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-16 11:53:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 323 transitions. [2023-12-16 11:53:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 11:53:36,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:53:36,994 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:53:37,003 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 [2023-12-16 11:53:37,200 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 [2023-12-16 11:53:37,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:53:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:53:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1270230639, now seen corresponding path program 1 times [2023-12-16 11:53:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:53:37,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911574721] [2023-12-16 11:53:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:37,205 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 [2023-12-16 11:53:37,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:53:37,206 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) [2023-12-16 11:53:37,218 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 [2023-12-16 11:53:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:37,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:53:37,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:53:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1848 proven. 63 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-12-16 11:53:37,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:53:37,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:53:37,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911574721] [2023-12-16 11:53:37,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911574721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:53:37,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1931778370] [2023-12-16 11:53:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:37,671 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:53:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:53:37,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:53:37,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 11:53:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:40,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:53:40,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:53:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1848 proven. 63 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-12-16 11:53:40,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:53:40,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1931778370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:53:40,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:53:40,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 11:53:40,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553130731] [2023-12-16 11:53:40,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:53:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:53:40,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:53:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:53:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:53:40,838 INFO L87 Difference]: Start difference. First operand 203 states and 323 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:53:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:53:41,126 INFO L93 Difference]: Finished difference Result 421 states and 659 transitions. [2023-12-16 11:53:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 11:53:41,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 257 [2023-12-16 11:53:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:53:41,134 INFO L225 Difference]: With dead ends: 421 [2023-12-16 11:53:41,134 INFO L226 Difference]: Without dead ends: 219 [2023-12-16 11:53:41,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 548 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:53:41,136 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 76 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:53:41,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 238 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:53:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-16 11:53:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 211. [2023-12-16 11:53:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 118 states have internal predecessors, (153), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-16 11:53:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 325 transitions. [2023-12-16 11:53:41,156 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 325 transitions. Word has length 257 [2023-12-16 11:53:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:53:41,156 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 325 transitions. [2023-12-16 11:53:41,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:53:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 325 transitions. [2023-12-16 11:53:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-16 11:53:41,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:53:41,159 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:53:41,175 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 [2023-12-16 11:53:41,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-16 11:53:41,572 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:53:41,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:53:41,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:53:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1293479784, now seen corresponding path program 1 times [2023-12-16 11:53:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:53:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921482550] [2023-12-16 11:53:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:41,574 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 [2023-12-16 11:53:41,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:53:41,581 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) [2023-12-16 11:53:41,581 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 [2023-12-16 11:53:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:42,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-16 11:53:42,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:54:35,741 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:54:35,741 WARN L340 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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:54:36,968 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 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:54:36,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown