/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-pr-cn_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:19:46,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:19:46,154 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 12:19:46,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:19:46,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:19:46,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:19:46,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:19:46,186 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:19:46,187 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:19:46,191 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:19:46,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:19:46,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:19:46,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:19:46,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:19:46,194 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:19:46,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:19:46,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:19:46,195 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:19:46,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:19:46,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:19:46,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:19:46,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:19:46,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:19:46,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:19:46,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:19:46,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:19:46,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:19:46,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:19:46,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:19:46,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:19:46,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:19:46,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:19:46,199 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:19:46,199 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:19:46,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:19:46,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:19:46,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:19:46,200 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:19:46,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:19:46,201 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:19:46,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:19:46,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:19:46,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:19:46,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:19:46,421 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:19:46,421 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:19:46,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-4.i [2023-12-16 12:19:47,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:19:47,596 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:19:47,597 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-4.i [2023-12-16 12:19:47,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4414d7cf/aa9d77f5916f44dc9171c591d7560bd2/FLAG99a78c37d [2023-12-16 12:19:47,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4414d7cf/aa9d77f5916f44dc9171c591d7560bd2 [2023-12-16 12:19:47,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:19:47,624 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:19:47,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:19:47,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:19:47,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:19:47,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:47,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d47fae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47, skipping insertion in model container [2023-12-16 12:19:47,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:47,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:19:47,784 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-pr-cn_file-4.i[918,931] [2023-12-16 12:19:47,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:19:47,845 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:19:47,853 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-pr-cn_file-4.i[918,931] [2023-12-16 12:19:47,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:19:47,922 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:19:47,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47 WrapperNode [2023-12-16 12:19:47,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:19:47,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:19:47,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:19:47,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:19:47,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:47,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:47,970 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 237 [2023-12-16 12:19:47,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:19:47,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:19:47,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:19:47,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:19:47,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:47,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:47,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,013 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 12:19:48,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:19:48,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:19:48,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:19:48,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:19:48,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (1/1) ... [2023-12-16 12:19:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:19:48,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:19:48,068 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 12:19:48,074 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 12:19:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:19:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:19:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:19:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:19:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:19:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:19:48,165 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:19:48,167 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:19:48,948 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:19:48,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:19:48,995 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:19:48,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:19:48 BoogieIcfgContainer [2023-12-16 12:19:48,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:19:48,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:19:48,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:19:49,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:19:49,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:19:47" (1/3) ... [2023-12-16 12:19:49,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc752aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:19:49, skipping insertion in model container [2023-12-16 12:19:49,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:19:47" (2/3) ... [2023-12-16 12:19:49,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc752aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:19:49, skipping insertion in model container [2023-12-16 12:19:49,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:19:48" (3/3) ... [2023-12-16 12:19:49,002 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-4.i [2023-12-16 12:19:49,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:19:49,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:19:49,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:19:49,047 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;@5bd6021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:19:49,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:19:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 60 states have (on average 1.45) internal successors, (87), 61 states have internal predecessors, (87), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 12:19:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-16 12:19:49,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:19:49,076 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:49,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:19:49,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:19:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash -924586243, now seen corresponding path program 1 times [2023-12-16 12:19:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:19:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169884745] [2023-12-16 12:19:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:19:49,117 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 12:19:49,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:19:49,119 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 12:19:49,122 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 12:19:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:19:49,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:19:49,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:19:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-16 12:19:49,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:19:49,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:19:49,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169884745] [2023-12-16 12:19:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169884745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:19:49,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:19:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:19:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659742692] [2023-12-16 12:19:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:19:49,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:19:49,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:19:49,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:19:49,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:19:49,526 INFO L87 Difference]: Start difference. First operand has 103 states, 60 states have (on average 1.45) internal successors, (87), 61 states have internal predecessors, (87), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-16 12:19:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:19:49,865 INFO L93 Difference]: Finished difference Result 203 states and 372 transitions. [2023-12-16 12:19:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:19:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 245 [2023-12-16 12:19:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:19:49,886 INFO L225 Difference]: With dead ends: 203 [2023-12-16 12:19:49,886 INFO L226 Difference]: Without dead ends: 101 [2023-12-16 12:19:49,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 244 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 12:19:49,893 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 12:19:49,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 12:19:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-16 12:19:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-12-16 12:19:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 12:19:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 161 transitions. [2023-12-16 12:19:49,944 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 161 transitions. Word has length 245 [2023-12-16 12:19:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:19:49,948 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 161 transitions. [2023-12-16 12:19:49,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-16 12:19:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 161 transitions. [2023-12-16 12:19:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-16 12:19:49,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:19:49,967 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:49,977 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 [2023-12-16 12:19:50,167 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 12:19:50,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:19:50,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:19:50,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1611825030, now seen corresponding path program 1 times [2023-12-16 12:19:50,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:19:50,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214858695] [2023-12-16 12:19:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:19:50,170 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 12:19:50,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:19:50,171 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 12:19:50,175 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 12:19:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:19:50,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 12:19:50,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:19:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 379 proven. 219 refuted. 0 times theorem prover too weak. 2522 trivial. 0 not checked. [2023-12-16 12:19:51,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:19:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 222 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2023-12-16 12:19:51,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:19:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214858695] [2023-12-16 12:19:51,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214858695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:19:51,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:19:51,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-12-16 12:19:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274712607] [2023-12-16 12:19:51,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:19:51,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 12:19:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:19:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 12:19:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-16 12:19:51,811 INFO L87 Difference]: Start difference. First operand 101 states and 161 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 3 states have call successors, (78), 3 states have call predecessors, (78), 7 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2023-12-16 12:19:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:19:53,216 INFO L93 Difference]: Finished difference Result 233 states and 359 transitions. [2023-12-16 12:19:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 12:19:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 3 states have call successors, (78), 3 states have call predecessors, (78), 7 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 246 [2023-12-16 12:19:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:19:53,220 INFO L225 Difference]: With dead ends: 233 [2023-12-16 12:19:53,220 INFO L226 Difference]: Without dead ends: 133 [2023-12-16 12:19:53,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 477 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2023-12-16 12:19:53,222 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 169 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 12:19:53,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 542 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 12:19:53,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-16 12:19:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2023-12-16 12:19:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 12:19:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 169 transitions. [2023-12-16 12:19:53,235 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 169 transitions. Word has length 246 [2023-12-16 12:19:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:19:53,236 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 169 transitions. [2023-12-16 12:19:53,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 3 states have call successors, (78), 3 states have call predecessors, (78), 7 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2023-12-16 12:19:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 169 transitions. [2023-12-16 12:19:53,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 12:19:53,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:19:53,238 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:53,252 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 [2023-12-16 12:19:53,445 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 12:19:53,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:19:53,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:19:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1153927032, now seen corresponding path program 1 times [2023-12-16 12:19:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:19:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832345424] [2023-12-16 12:19:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:19:53,447 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 12:19:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:19:53,448 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 12:19:53,450 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 12:19:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:19:53,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:19:53,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:19:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 193 proven. 114 refuted. 0 times theorem prover too weak. 2813 trivial. 0 not checked. [2023-12-16 12:19:54,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:19:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 3 proven. 114 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2023-12-16 12:19:54,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:19:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832345424] [2023-12-16 12:19:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832345424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:19:54,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:19:54,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-16 12:19:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611895054] [2023-12-16 12:19:54,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:19:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 12:19:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:19:54,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 12:19:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:19:54,798 INFO L87 Difference]: Start difference. First operand 114 states and 169 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (80), 3 states have call predecessors, (80), 5 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 12:19:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:19:55,946 INFO L93 Difference]: Finished difference Result 245 states and 358 transitions. [2023-12-16 12:19:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 12:19:55,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (80), 3 states have call predecessors, (80), 5 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 247 [2023-12-16 12:19:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:19:55,961 INFO L225 Difference]: With dead ends: 245 [2023-12-16 12:19:55,961 INFO L226 Difference]: Without dead ends: 132 [2023-12-16 12:19:55,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-16 12:19:55,962 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 112 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:19:55,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 345 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 12:19:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-16 12:19:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2023-12-16 12:19:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 12:19:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 159 transitions. [2023-12-16 12:19:55,972 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 159 transitions. Word has length 247 [2023-12-16 12:19:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:19:55,973 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 159 transitions. [2023-12-16 12:19:55,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (80), 3 states have call predecessors, (80), 5 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-16 12:19:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 159 transitions. [2023-12-16 12:19:55,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 12:19:55,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:19:55,975 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:55,986 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 12:19:56,186 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 [2023-12-16 12:19:56,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:19:56,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:19:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash 130743383, now seen corresponding path program 1 times [2023-12-16 12:19:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:19:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022423977] [2023-12-16 12:19:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:19:56,188 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 12:19:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:19:56,189 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) [2023-12-16 12:19:56,204 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 [2023-12-16 12:19:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:19:56,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:19:56,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:19:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-16 12:19:56,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:19:56,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:19:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022423977] [2023-12-16 12:19:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022423977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:19:56,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:19:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 12:19:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069518460] [2023-12-16 12:19:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:19:56,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:19:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:19:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:19:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:19:56,716 INFO L87 Difference]: Start difference. First operand 107 states and 159 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-16 12:19:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:19:57,610 INFO L93 Difference]: Finished difference Result 327 states and 486 transitions. [2023-12-16 12:19:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 12:19:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 247 [2023-12-16 12:19:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:19:57,612 INFO L225 Difference]: With dead ends: 327 [2023-12-16 12:19:57,612 INFO L226 Difference]: Without dead ends: 221 [2023-12-16 12:19:57,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 12:19:57,614 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 225 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 12:19:57,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 447 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 12:19:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-16 12:19:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2023-12-16 12:19:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 123 states have (on average 1.2357723577235773) internal successors, (152), 123 states have internal predecessors, (152), 80 states have call successors, (80), 6 states have call predecessors, (80), 6 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 12:19:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 312 transitions. [2023-12-16 12:19:57,634 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 312 transitions. Word has length 247 [2023-12-16 12:19:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:19:57,635 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 312 transitions. [2023-12-16 12:19:57,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-16 12:19:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 312 transitions. [2023-12-16 12:19:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 12:19:57,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:19:57,637 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:57,646 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 [2023-12-16 12:19:57,846 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 [2023-12-16 12:19:57,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:19:57,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:19:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 831807961, now seen corresponding path program 1 times [2023-12-16 12:19:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:19:57,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195314056] [2023-12-16 12:19:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:19:57,848 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 12:19:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:19:57,849 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 12:19:57,854 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 12:19:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:19:58,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 12:19:58,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:19:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1047 proven. 93 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2023-12-16 12:19:59,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:19:59,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:19:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195314056] [2023-12-16 12:19:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195314056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:19:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [927894500] [2023-12-16 12:19:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:19:59,434 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:19:59,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:19:59,435 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) [2023-12-16 12:19:59,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 12:20:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:20:00,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 12:20:00,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:20:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1198 proven. 177 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2023-12-16 12:20:01,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:20:01,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [927894500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:20:01,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:20:01,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2023-12-16 12:20:01,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176231001] [2023-12-16 12:20:01,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:20:01,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 12:20:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:20:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 12:20:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-16 12:20:01,950 INFO L87 Difference]: Start difference. First operand 210 states and 312 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 16 states have internal predecessors, (105), 5 states have call successors, (80), 5 states have call predecessors, (80), 8 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-16 12:20:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:20:07,626 INFO L93 Difference]: Finished difference Result 567 states and 817 transitions. [2023-12-16 12:20:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 12:20:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 16 states have internal predecessors, (105), 5 states have call successors, (80), 5 states have call predecessors, (80), 8 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) Word has length 247 [2023-12-16 12:20:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:20:07,630 INFO L225 Difference]: With dead ends: 567 [2023-12-16 12:20:07,630 INFO L226 Difference]: Without dead ends: 358 [2023-12-16 12:20:07,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=457, Invalid=1183, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 12:20:07,632 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 449 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-16 12:20:07,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 812 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-16 12:20:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-12-16 12:20:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 338. [2023-12-16 12:20:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 202 states have (on average 1.2128712871287128) internal successors, (245), 202 states have internal predecessors, (245), 120 states have call successors, (120), 15 states have call predecessors, (120), 15 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-16 12:20:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 485 transitions. [2023-12-16 12:20:07,674 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 485 transitions. Word has length 247 [2023-12-16 12:20:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:20:07,674 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 485 transitions. [2023-12-16 12:20:07,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 16 states have internal predecessors, (105), 5 states have call successors, (80), 5 states have call predecessors, (80), 8 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-16 12:20:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 485 transitions. [2023-12-16 12:20:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 12:20:07,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:20:07,676 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:07,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 12:20:07,886 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 (6)] Ended with exit code 0 [2023-12-16 12:20:08,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /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 12:20:08,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:20:08,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:20:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1162336745, now seen corresponding path program 1 times [2023-12-16 12:20:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:20:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58159896] [2023-12-16 12:20:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:20:08,079 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 12:20:08,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:20:08,079 INFO L229 MonitoredProcess]: Starting monitored process 8 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 12:20:08,080 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 (8)] Waiting until timeout for monitored process [2023-12-16 12:20:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:20:08,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:20:08,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:20:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-16 12:20:08,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:20:08,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:20:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58159896] [2023-12-16 12:20:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58159896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:20:08,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:20:08,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 12:20:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914392173] [2023-12-16 12:20:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:20:08,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:20:08,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:20:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:20:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:20:08,975 INFO L87 Difference]: Start difference. First operand 338 states and 485 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-16 12:20:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:20:09,733 INFO L93 Difference]: Finished difference Result 567 states and 810 transitions. [2023-12-16 12:20:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 12:20:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 247 [2023-12-16 12:20:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:20:09,748 INFO L225 Difference]: With dead ends: 567 [2023-12-16 12:20:09,748 INFO L226 Difference]: Without dead ends: 230 [2023-12-16 12:20:09,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 12:20:09,750 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 103 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 12:20:09,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 494 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 12:20:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-16 12:20:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 207. [2023-12-16 12:20:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 116 states have internal predecessors, (135), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 12:20:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 295 transitions. [2023-12-16 12:20:09,784 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 295 transitions. Word has length 247 [2023-12-16 12:20:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:20:09,784 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 295 transitions. [2023-12-16 12:20:09,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-16 12:20:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 295 transitions. [2023-12-16 12:20:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-16 12:20:09,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:20:09,786 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:09,795 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 12:20:09,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 12:20:09,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:20:09,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:20:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 980828635, now seen corresponding path program 1 times [2023-12-16 12:20:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:20:09,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545305376] [2023-12-16 12:20:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:20:09,996 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 12:20:09,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:20:09,997 INFO L229 MonitoredProcess]: Starting monitored process 9 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 12:20:09,997 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 (9)] Waiting until timeout for monitored process [2023-12-16 12:20:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:20:10,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 12:20:10,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:20:58,379 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:20:58,379 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 12:20:58,705 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 12:20:58,719 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 (9)] Ended with exit code 0 [2023-12-16 12:20:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 12:20:58,913 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 249 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-16-2-3-2-2-2-4-3-2-2-3-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-4-3-3-2-2-2-2-2-2-2-2-2-2-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-72-4-3-4-3-4-3-3-2-3-2-3-2-4-3-3-2-4-3-3-2-4-3-4-3-3-2-3-2-4-3-3-2-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-2-4-3-4-3-3-2-3-2-3-2-3-2-2-2-3-2-3-2-2-1 context. [2023-12-16 12:20:58,917 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:20:58,919 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 12:20:58,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:20:58 BoogieIcfgContainer [2023-12-16 12:20:58,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 12:20:58,921 INFO L158 Benchmark]: Toolchain (without parser) took 71296.70ms. Allocated memory was 195.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 153.1MB in the beginning and 536.3MB in the end (delta: -383.2MB). Peak memory consumption was 924.2MB. Max. memory is 8.0GB. [2023-12-16 12:20:58,921 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 195.0MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 12:20:58,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.39ms. Allocated memory is still 195.0MB. Free memory was 153.1MB in the beginning and 136.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 12:20:58,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.35ms. Allocated memory is still 195.0MB. Free memory was 136.3MB in the beginning and 133.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 12:20:58,923 INFO L158 Benchmark]: Boogie Preprocessor took 72.52ms. Allocated memory is still 195.0MB. Free memory was 133.6MB in the beginning and 129.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 12:20:58,924 INFO L158 Benchmark]: RCFGBuilder took 951.21ms. Allocated memory is still 195.0MB. Free memory was 129.5MB in the beginning and 100.5MB in the end (delta: 29.0MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-16 12:20:58,924 INFO L158 Benchmark]: TraceAbstraction took 69923.21ms. Allocated memory was 195.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 99.7MB in the beginning and 536.3MB in the end (delta: -436.6MB). Peak memory consumption was 870.7MB. Max. memory is 8.0GB. [2023-12-16 12:20:58,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 195.0MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 297.39ms. Allocated memory is still 195.0MB. Free memory was 153.1MB in the beginning and 136.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.35ms. Allocated memory is still 195.0MB. Free memory was 136.3MB in the beginning and 133.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.52ms. Allocated memory is still 195.0MB. Free memory was 133.6MB in the beginning and 129.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 951.21ms. Allocated memory is still 195.0MB. Free memory was 129.5MB in the beginning and 100.5MB in the end (delta: 29.0MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 69923.21ms. Allocated memory was 195.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 99.7MB in the beginning and 536.3MB in the end (delta: -436.6MB). Peak memory consumption was 870.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 249 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-16-2-3-2-2-2-4-3-2-2-3-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-4-3-3-2-2-2-2-2-2-2-2-2-2-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-72-4-3-4-3-4-3-3-2-3-2-3-2-4-3-3-2-4-3-3-2-4-3-4-3-3-2-3-2-4-3-3-2-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-2-4-3-4-3-3-2-3-2-3-2-3-2-2-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.9s, OverallIterations: 7, TraceHistogramMax: 40, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1060 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1058 mSDsluCounter, 2798 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1787 mSDsCounter, 440 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2187 IncrementalHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 440 mSolverCounterUnsat, 1011 mSDtfsCounter, 2187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2301 GetRequests, 2214 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=5, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 98 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 1726 NumberOfCodeBlocks, 1726 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2210 ConstructedInterpolants, 4 QuantifiedInterpolants, 12593 SizeOfPredicates, 36 NumberOfNonLiveVariables, 2789 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 27141/28080 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown