/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_codestructure_steplocals_file-99.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:34:08,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:34:08,312 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 10:34:08,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:34:08,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:34:08,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:34:08,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:34:08,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:34:08,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:34:08,343 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:34:08,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:34:08,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:34:08,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:34:08,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:34:08,345 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:34:08,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:34:08,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:34:08,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:34:08,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:34:08,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:34:08,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:34:08,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:34:08,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:34:08,347 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:34:08,348 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:34:08,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:34:08,348 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:34:08,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:34:08,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:34:08,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:34:08,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:34:08,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:34:08,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:34:08,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:34:08,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:34:08,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:34:08,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:34:08,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:34:08,350 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:34:08,351 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:34:08,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:34:08,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:34:08,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:34:08,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:34:08,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:34:08,352 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:34:08,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:34:08,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:34:08,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:34:08,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:34:08,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:34:08,578 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:34:08,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-99.i [2023-12-16 10:34:09,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:34:09,942 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:34:09,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-99.i [2023-12-16 10:34:09,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edcdbf4d5/3d4e232f74b14f0ba949c107463e3277/FLAG7335c8d6e [2023-12-16 10:34:09,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edcdbf4d5/3d4e232f74b14f0ba949c107463e3277 [2023-12-16 10:34:09,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:34:09,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:34:09,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:34:09,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:34:09,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:34:09,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:34:09" (1/1) ... [2023-12-16 10:34:09,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:09, skipping insertion in model container [2023-12-16 10:34:09,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:34:09" (1/1) ... [2023-12-16 10:34:10,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:34:10,140 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_codestructure_steplocals_file-99.i[917,930] [2023-12-16 10:34:10,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:34:10,206 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:34:10,214 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_codestructure_steplocals_file-99.i[917,930] [2023-12-16 10:34:10,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:34:10,246 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:34:10,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10 WrapperNode [2023-12-16 10:34:10,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:34:10,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:34:10,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:34:10,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:34:10,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,304 INFO L138 Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2023-12-16 10:34:10,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:34:10,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:34:10,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:34:10,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:34:10,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,326 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 10:34:10,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:34:10,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:34:10,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:34:10,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:34:10,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (1/1) ... [2023-12-16 10:34:10,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:34:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:34:10,386 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 10:34:10,402 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 10:34:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:34:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:34:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:34:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:34:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:34:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:34:10,483 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:34:10,484 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:34:12,326 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:34:12,380 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:34:12,380 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:34:12,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:34:12 BoogieIcfgContainer [2023-12-16 10:34:12,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:34:12,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:34:12,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:34:12,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:34:12,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:34:09" (1/3) ... [2023-12-16 10:34:12,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e6784f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:34:12, skipping insertion in model container [2023-12-16 10:34:12,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:34:10" (2/3) ... [2023-12-16 10:34:12,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e6784f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:34:12, skipping insertion in model container [2023-12-16 10:34:12,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:34:12" (3/3) ... [2023-12-16 10:34:12,387 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-99.i [2023-12-16 10:34:12,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:34:12,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:34:12,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:34:12,446 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;@f0f5c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:34:12,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:34:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 10:34:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-16 10:34:12,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:34:12,475 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:12,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:34:12,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:34:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2128370384, now seen corresponding path program 1 times [2023-12-16 10:34:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:34:12,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793194566] [2023-12-16 10:34:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:34:12,502 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 10:34:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:34:12,504 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 10:34:12,539 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 10:34:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:34:12,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:34:12,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:34:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1124 proven. 0 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2023-12-16 10:34:12,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:34:12,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:34:12,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793194566] [2023-12-16 10:34:12,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793194566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:34:12,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:34:12,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:34:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411187099] [2023-12-16 10:34:12,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:34:12,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:34:12,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:34:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:34:12,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:34:12,996 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-16 10:34:14,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:34:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:34:14,244 INFO L93 Difference]: Finished difference Result 155 states and 283 transitions. [2023-12-16 10:34:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:34:14,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 208 [2023-12-16 10:34:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:34:14,276 INFO L225 Difference]: With dead ends: 155 [2023-12-16 10:34:14,276 INFO L226 Difference]: Without dead ends: 77 [2023-12-16 10:34:14,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 207 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 10:34:14,281 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 10:34:14,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 10:34:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-16 10:34:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-16 10:34:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 10:34:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 120 transitions. [2023-12-16 10:34:14,315 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 120 transitions. Word has length 208 [2023-12-16 10:34:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:34:14,316 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 120 transitions. [2023-12-16 10:34:14,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-16 10:34:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 120 transitions. [2023-12-16 10:34:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-16 10:34:14,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:34:14,320 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:14,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 10:34:14,528 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 10:34:14,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:34:14,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:34:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash -437964490, now seen corresponding path program 1 times [2023-12-16 10:34:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:34:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454240087] [2023-12-16 10:34:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:34:14,531 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 10:34:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:34:14,532 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 10:34:14,535 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 10:34:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:34:14,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 10:34:14,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:34:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 804 proven. 81 refuted. 0 times theorem prover too weak. 1495 trivial. 0 not checked. [2023-12-16 10:34:15,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:34:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 21 proven. 81 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-12-16 10:34:15,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:34:15,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454240087] [2023-12-16 10:34:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454240087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:34:15,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:34:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 10:34:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680652722] [2023-12-16 10:34:15,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:34:15,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 10:34:15,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:34:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 10:34:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 10:34:15,670 INFO L87 Difference]: Start difference. First operand 77 states and 120 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-16 10:34:18,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:34:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:34:18,671 INFO L93 Difference]: Finished difference Result 161 states and 246 transitions. [2023-12-16 10:34:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 10:34:18,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 208 [2023-12-16 10:34:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:34:18,707 INFO L225 Difference]: With dead ends: 161 [2023-12-16 10:34:18,707 INFO L226 Difference]: Without dead ends: 85 [2023-12-16 10:34:18,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 10:34:18,709 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 84 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 10:34:18,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 158 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 10:34:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-16 10:34:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2023-12-16 10:34:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 10:34:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 122 transitions. [2023-12-16 10:34:18,723 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 122 transitions. Word has length 208 [2023-12-16 10:34:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:34:18,724 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 122 transitions. [2023-12-16 10:34:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-16 10:34:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 122 transitions. [2023-12-16 10:34:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-16 10:34:18,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:34:18,728 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:18,756 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 10:34:18,956 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 10:34:18,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:34:18,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:34:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2081995444, now seen corresponding path program 1 times [2023-12-16 10:34:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:34:18,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491948628] [2023-12-16 10:34:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:34:18,959 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 10:34:18,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:34:18,962 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 10:34:18,964 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 10:34:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:34:19,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 10:34:19,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:34:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 45 proven. 1216 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2023-12-16 10:34:20,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:34:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 45 proven. 57 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-12-16 10:34:20,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:34:20,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491948628] [2023-12-16 10:34:20,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491948628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:34:20,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:34:20,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 10:34:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527957640] [2023-12-16 10:34:20,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:34:20,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 10:34:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:34:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 10:34:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 10:34:20,798 INFO L87 Difference]: Start difference. First operand 81 states and 122 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) [2023-12-16 10:34:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:34:24,013 INFO L93 Difference]: Finished difference Result 216 states and 313 transitions. [2023-12-16 10:34:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 10:34:24,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) Word has length 208 [2023-12-16 10:34:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:34:24,016 INFO L225 Difference]: With dead ends: 216 [2023-12-16 10:34:24,016 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 10:34:24,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2023-12-16 10:34:24,017 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 102 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 10:34:24,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 293 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 10:34:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 10:34:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2023-12-16 10:34:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 69 states have (on average 1.173913043478261) internal successors, (81), 70 states have internal predecessors, (81), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 10:34:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2023-12-16 10:34:24,041 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 208 [2023-12-16 10:34:24,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:34:24,045 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2023-12-16 10:34:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) [2023-12-16 10:34:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2023-12-16 10:34:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-16 10:34:24,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:34:24,051 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:24,061 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 10:34:24,260 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 10:34:24,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:34:24,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:34:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash 274125887, now seen corresponding path program 1 times [2023-12-16 10:34:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:34:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390371099] [2023-12-16 10:34:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:34:24,262 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 10:34:24,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:34:24,266 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 10:34:24,267 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 10:34:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:34:24,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 10:34:24,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:35:26,920 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 10:35:26,921 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 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:35:26,974 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 10:35:26,987 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 [2023-12-16 10:35:27,174 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 10:35:27,175 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 210 with TraceHistMax 35,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 27 known predicates. [2023-12-16 10:35:27,179 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 10:35:27,182 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 10:35:27,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 10:35:27 BoogieIcfgContainer [2023-12-16 10:35:27,192 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 10:35:27,193 INFO L158 Benchmark]: Toolchain (without parser) took 77227.61ms. Allocated memory was 327.2MB in the beginning and 426.8MB in the end (delta: 99.6MB). Free memory was 275.0MB in the beginning and 275.0MB in the end (delta: -40.8kB). Peak memory consumption was 99.6MB. Max. memory is 8.0GB. [2023-12-16 10:35:27,193 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 10:35:27,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.94ms. Allocated memory is still 327.2MB. Free memory was 275.0MB in the beginning and 259.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 10:35:27,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.05ms. Allocated memory is still 327.2MB. Free memory was 259.8MB in the beginning and 257.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 10:35:27,194 INFO L158 Benchmark]: Boogie Preprocessor took 36.26ms. Allocated memory is still 327.2MB. Free memory was 257.2MB in the beginning and 253.5MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 10:35:27,194 INFO L158 Benchmark]: RCFGBuilder took 2038.86ms. Allocated memory is still 327.2MB. Free memory was 253.5MB in the beginning and 226.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-16 10:35:27,194 INFO L158 Benchmark]: TraceAbstraction took 74809.97ms. Allocated memory was 327.2MB in the beginning and 426.8MB in the end (delta: 99.6MB). Free memory was 225.7MB in the beginning and 275.0MB in the end (delta: -49.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2023-12-16 10:35:27,196 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 280.94ms. Allocated memory is still 327.2MB. Free memory was 275.0MB in the beginning and 259.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.05ms. Allocated memory is still 327.2MB. Free memory was 259.8MB in the beginning and 257.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.26ms. Allocated memory is still 327.2MB. Free memory was 257.2MB in the beginning and 253.5MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 2038.86ms. Allocated memory is still 327.2MB. Free memory was 253.5MB in the beginning and 226.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 74809.97ms. Allocated memory was 327.2MB in the beginning and 426.8MB in the end (delta: 99.6MB). Free memory was 225.7MB in the beginning and 275.0MB in the end (delta: -49.3MB). Peak memory consumption was 50.3MB. 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 210 with TraceHistMax 35,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 27 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.8s, OverallIterations: 4, TraceHistogramMax: 35, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 568 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 267 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 639 IncrementalHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 301 mSDtfsCounter, 639 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1050 GetRequests, 1022 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 1035 ConstructedInterpolants, 0 QuantifiedInterpolants, 3534 SizeOfPredicates, 7 NumberOfNonLiveVariables, 988 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 10465/11900 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