/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-co_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 09:50:45,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 09:50:45,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 09:50:45,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 09:50:45,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 09:50:45,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 09:50:45,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 09:50:45,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 09:50:45,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 09:50:45,364 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 09:50:45,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 09:50:45,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 09:50:45,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 09:50:45,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 09:50:45,366 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 09:50:45,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 09:50:45,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 09:50:45,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 09:50:45,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 09:50:45,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 09:50:45,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 09:50:45,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 09:50:45,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 09:50:45,369 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 09:50:45,369 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 09:50:45,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 09:50:45,369 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 09:50:45,370 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 09:50:45,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 09:50:45,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 09:50:45,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 09:50:45,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 09:50:45,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 09:50:45,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 09:50:45,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:50:45,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 09:50:45,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 09:50:45,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 09:50:45,372 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 09:50:45,372 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 09:50:45,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 09:50:45,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 09:50:45,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 09:50:45,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 09:50:45,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 09:50:45,374 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 09:50:45,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 09:50:45,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 09:50:45,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 09:50:45,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 09:50:45,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 09:50:45,588 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 09:50:45,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i [2023-12-23 09:50:46,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 09:50:46,781 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 09:50:46,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i [2023-12-23 09:50:46,793 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca44bb3c/89f36e1cf57f4a00976218846a286936/FLAGfaffa5954 [2023-12-23 09:50:46,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca44bb3c/89f36e1cf57f4a00976218846a286936 [2023-12-23 09:50:46,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 09:50:46,807 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 09:50:46,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 09:50:46,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 09:50:46,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 09:50:46,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:50:46" (1/1) ... [2023-12-23 09:50:46,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3718f281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:46, skipping insertion in model container [2023-12-23 09:50:46,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:50:46" (1/1) ... [2023-12-23 09:50:46,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 09:50:46,984 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-co_file-58.i[919,932] [2023-12-23 09:50:47,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:50:47,051 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 09:50:47,059 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-co_file-58.i[919,932] [2023-12-23 09:50:47,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:50:47,141 INFO L206 MainTranslator]: Completed translation [2023-12-23 09:50:47,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47 WrapperNode [2023-12-23 09:50:47,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 09:50:47,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 09:50:47,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 09:50:47,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 09:50:47,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,184 INFO L138 Inliner]: procedures = 27, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 215 [2023-12-23 09:50:47,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 09:50:47,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 09:50:47,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 09:50:47,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 09:50:47,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,216 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 09:50:47,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 09:50:47,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 09:50:47,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 09:50:47,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 09:50:47,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (1/1) ... [2023-12-23 09:50:47,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:50:47,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 09:50:47,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 09:50:47,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 09:50:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 09:50:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 09:50:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 09:50:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 09:50:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 09:50:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 09:50:47,392 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 09:50:47,394 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 09:50:47,953 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 09:50:47,996 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 09:50:47,996 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 09:50:47,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:50:47 BoogieIcfgContainer [2023-12-23 09:50:47,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 09:50:47,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 09:50:47,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 09:50:48,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 09:50:48,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:50:46" (1/3) ... [2023-12-23 09:50:48,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b60c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:50:48, skipping insertion in model container [2023-12-23 09:50:48,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:50:47" (2/3) ... [2023-12-23 09:50:48,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b60c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:50:48, skipping insertion in model container [2023-12-23 09:50:48,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:50:47" (3/3) ... [2023-12-23 09:50:48,003 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i [2023-12-23 09:50:48,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 09:50:48,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 09:50:48,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 09:50:48,069 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;@25f86c7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 09:50:48,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 09:50:48,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-23 09:50:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-23 09:50:48,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:50:48,117 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:50:48,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:50:48,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:50:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1315837141, now seen corresponding path program 1 times [2023-12-23 09:50:48,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:50:48,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161466157] [2023-12-23 09:50:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:50:48,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:50:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:50:48,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:50:48,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 09:50:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:50:48,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 09:50:48,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:50:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 2080 trivial. 0 not checked. [2023-12-23 09:50:48,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:50:48,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:50:48,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161466157] [2023-12-23 09:50:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161466157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:50:48,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:50:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 09:50:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349058902] [2023-12-23 09:50:48,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:50:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 09:50:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:50:48,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 09:50:48,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 09:50:48,570 INFO L87 Difference]: Start difference. First operand has 92 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-23 09:50:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:50:48,647 INFO L93 Difference]: Finished difference Result 181 states and 337 transitions. [2023-12-23 09:50:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 09:50:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 224 [2023-12-23 09:50:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:50:48,661 INFO L225 Difference]: With dead ends: 181 [2023-12-23 09:50:48,661 INFO L226 Difference]: Without dead ends: 90 [2023-12-23 09:50:48,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 09:50:48,671 INFO L413 NwaCegarLoop]: 142 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, 142 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 [2023-12-23 09:50:48,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 09:50:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-23 09:50:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-23 09:50:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-23 09:50:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 145 transitions. [2023-12-23 09:50:48,717 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 145 transitions. Word has length 224 [2023-12-23 09:50:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:50:48,717 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 145 transitions. [2023-12-23 09:50:48,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-23 09:50:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 145 transitions. [2023-12-23 09:50:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-23 09:50:48,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:50:48,721 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 09:50:48,729 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 [2023-12-23 09:50:48,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:50:48,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:50:48,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:50:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1809978607, now seen corresponding path program 1 times [2023-12-23 09:50:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:50:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905397723] [2023-12-23 09:50:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:50:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 09:50:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:50:48,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 09:50:48,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 09:50:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:50:49,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-23 09:50:49,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:50:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1703 proven. 168 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2023-12-23 09:50:56,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:51:06,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:51:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905397723] [2023-12-23 09:51:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905397723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 09:51:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176550438] [2023-12-23 09:51:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:51:06,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 09:51:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 09:51:06,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 09:51:06,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 09:51:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:51:06,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-23 09:51:06,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:51:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1758 proven. 159 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-12-23 09:51:18,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:51:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1176550438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 09:51:36,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 09:51:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 25 [2023-12-23 09:51:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092315314] [2023-12-23 09:51:36,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 09:51:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-23 09:51:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:51:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-23 09:51:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2023-12-23 09:51:36,611 INFO L87 Difference]: Start difference. First operand 90 states and 145 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 6 states have call successors, (38), 6 states have call predecessors, (38), 9 states have return successors, (39), 6 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-23 09:51:41,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:51:55,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:00,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:03,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:12,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:15,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:18,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:23,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:26,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:28,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:34,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:37,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:40,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:44,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:47,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:52,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:54,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:52:56,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:00,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:06,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:10,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:13,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:17,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:20,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:23,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:26,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:29,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:32,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:36,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:53:56,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:54:11,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:54:18,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:54:38,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:54:48,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:16,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:18,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:22,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:24,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:37,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:39,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:43,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:46,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:48,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:55:54,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:56:24,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:00,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:02,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:33,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:42,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:44,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:49,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:51,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:53,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:57,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:57:58,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:58:15,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:58:20,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:58:23,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:58:26,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:58:46,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:59:01,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 09:59:37,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:01:46,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:01:47,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:02:14,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:03:23,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:03:29,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:04:11,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:04:14,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:04:46,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:04:54,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:04:56,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:04:59,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:05:02,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:05:04,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:05:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:05:10,187 INFO L93 Difference]: Finished difference Result 533 states and 776 transitions. [2023-12-23 10:05:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-23 10:05:10,187 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 6 states have call successors, (38), 6 states have call predecessors, (38), 9 states have return successors, (39), 6 states have call predecessors, (39), 6 states have call successors, (39) Word has length 224 [2023-12-23 10:05:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:05:10,192 INFO L225 Difference]: With dead ends: 533 [2023-12-23 10:05:10,192 INFO L226 Difference]: Without dead ends: 444 [2023-12-23 10:05:10,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 506.1s TimeCoverageRelationStatistics Valid=2029, Invalid=7644, Unknown=29, NotChecked=0, Total=9702 [2023-12-23 10:05:10,195 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 901 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 678 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.8s IncrementalHoareTripleChecker+Time [2023-12-23 10:05:10,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 649 Invalid, 2184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [678 Valid, 1505 Invalid, 1 Unknown, 0 Unchecked, 337.8s Time] [2023-12-23 10:05:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-23 10:05:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 239. [2023-12-23 10:05:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 146 states have (on average 1.321917808219178) internal successors, (193), 148 states have internal predecessors, (193), 80 states have call successors, (80), 12 states have call predecessors, (80), 12 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 10:05:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 353 transitions. [2023-12-23 10:05:10,271 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 353 transitions. Word has length 224 [2023-12-23 10:05:10,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:05:10,273 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 353 transitions. [2023-12-23 10:05:10,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 6 states have call successors, (38), 6 states have call predecessors, (38), 9 states have return successors, (39), 6 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-23 10:05:10,274 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 353 transitions. [2023-12-23 10:05:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-23 10:05:10,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:05:10,283 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:05:10,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-23 10:05:10,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 10:05:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:05:10,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:05:10,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:05:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -34971245, now seen corresponding path program 1 times [2023-12-23 10:05:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:05:10,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090124414] [2023-12-23 10:05:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:10,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:05:10,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:05:10,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:05:10,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 10:05:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:10,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 10:05:10,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:05:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1338 proven. 45 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2023-12-23 10:05:11,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:05:11,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:05:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090124414] [2023-12-23 10:05:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090124414] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 10:05:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1973876305] [2023-12-23 10:05:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:11,991 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 10:05:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 10:05:11,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 10:05:11,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 10:05:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:20,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 10:05:20,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:05:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1338 proven. 45 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2023-12-23 10:05:21,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:05:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1973876305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 10:05:21,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 10:05:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 10:05:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481935612] [2023-12-23 10:05:21,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 10:05:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 10:05:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:05:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 10:05:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-23 10:05:21,747 INFO L87 Difference]: Start difference. First operand 239 states and 353 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-23 10:05:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:05:22,946 INFO L93 Difference]: Finished difference Result 497 states and 723 transitions. [2023-12-23 10:05:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 10:05:22,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 224 [2023-12-23 10:05:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:05:22,963 INFO L225 Difference]: With dead ends: 497 [2023-12-23 10:05:22,963 INFO L226 Difference]: Without dead ends: 259 [2023-12-23 10:05:22,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-23 10:05:22,965 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 76 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 10:05:22,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 223 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 10:05:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-23 10:05:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 247. [2023-12-23 10:05:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 152 states have (on average 1.269736842105263) internal successors, (193), 154 states have internal predecessors, (193), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 10:05:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2023-12-23 10:05:23,053 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 224 [2023-12-23 10:05:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:05:23,053 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2023-12-23 10:05:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-23 10:05:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2023-12-23 10:05:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-23 10:05:23,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:05:23,062 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:05:23,069 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 (5)] Ended with exit code 0 [2023-12-23 10:05:23,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 10:05:23,470 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 10:05:23,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:05:23,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:05:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1709134882, now seen corresponding path program 1 times [2023-12-23 10:05:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:05:23,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035741205] [2023-12-23 10:05:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:23,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:05:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:05:23,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:05:23,478 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 (7)] Waiting until timeout for monitored process [2023-12-23 10:05:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:23,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-23 10:05:23,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 10:05:29,588 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 10:05:29,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 10:05:29,611 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 (7)] Forceful destruction successful, exit code 0 [2023-12-23 10:05:29,620 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 [2023-12-23 10:05:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:05:29,802 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 227 with TraceHistMax 37,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-1 context. [2023-12-23 10:05:29,806 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-23 10:05:29,807 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 10:05:29,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 10:05:29 BoogieIcfgContainer [2023-12-23 10:05:29,809 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 10:05:29,809 INFO L158 Benchmark]: Toolchain (without parser) took 883002.71ms. Allocated memory was 176.2MB in the beginning and 318.8MB in the end (delta: 142.6MB). Free memory was 124.4MB in the beginning and 253.4MB in the end (delta: -129.1MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2023-12-23 10:05:29,809 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 176.2MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 10:05:29,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.74ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 107.6MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-23 10:05:29,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.62ms. Allocated memory is still 176.2MB. Free memory was 107.6MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 10:05:29,810 INFO L158 Benchmark]: Boogie Preprocessor took 60.70ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 101.0MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 10:05:29,810 INFO L158 Benchmark]: RCFGBuilder took 750.64ms. Allocated memory was 176.2MB in the beginning and 265.3MB in the end (delta: 89.1MB). Free memory was 101.0MB in the beginning and 219.1MB in the end (delta: -118.2MB). Peak memory consumption was 19.7MB. Max. memory is 8.0GB. [2023-12-23 10:05:29,810 INFO L158 Benchmark]: TraceAbstraction took 881810.53ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 218.1MB in the beginning and 253.4MB in the end (delta: -35.4MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. [2023-12-23 10:05:29,811 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 176.2MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 334.74ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 107.6MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.62ms. Allocated memory is still 176.2MB. Free memory was 107.6MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.70ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 101.0MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 750.64ms. Allocated memory was 176.2MB in the beginning and 265.3MB in the end (delta: 89.1MB). Free memory was 101.0MB in the beginning and 219.1MB in the end (delta: -118.2MB). Peak memory consumption was 19.7MB. Max. memory is 8.0GB. * TraceAbstraction took 881810.53ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 218.1MB in the beginning and 253.4MB in the end (delta: -35.4MB). Peak memory consumption was 17.6MB. 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 227 with TraceHistMax 37,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 881.8s, OverallIterations: 4, TraceHistogramMax: 37, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 814.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1051 SdHoareTripleChecker+Valid, 338.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 977 mSDsluCounter, 1014 SdHoareTripleChecker+Invalid, 328.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 649 mSDsCounter, 693 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1701 IncrementalHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 693 mSolverCounterUnsat, 365 mSDtfsCounter, 1701 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1270 GetRequests, 1161 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 506.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=3, InterpolantAutomatonStates: 91, 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, 3 MinimizatonAttempts, 217 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 9.3s SatisfiabilityAnalysisTime, 49.3s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1115 ConstructedInterpolants, 20 QuantifiedInterpolants, 7204 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1829 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 12903/13320 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