/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:30:42,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:30:42,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:30:42,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:30:42,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:30:42,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:30:42,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:30:42,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:30:42,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:30:42,383 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:30:42,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:30:42,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:30:42,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:30:42,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:30:42,385 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:30:42,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:30:42,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:30:42,386 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:30:42,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:30:42,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:30:42,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:30:42,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:30:42,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:30:42,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:30:42,387 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:30:42,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:30:42,388 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:30:42,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:30:42,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:30:42,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:30:42,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:30:42,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:30:42,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:30:42,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:30:42,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:30:42,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:30:42,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:30:42,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:30:42,391 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:30:42,391 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:30:42,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:30:42,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:30:42,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:30:42,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:30:42,615 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:30:42,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-12-16 12:30:43,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:30:43,837 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:30:43,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-12-16 12:30:43,844 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a434d04c/34f7c04b31e84d6a8055878491d4f59f/FLAG137d9f7a4 [2023-12-16 12:30:43,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a434d04c/34f7c04b31e84d6a8055878491d4f59f [2023-12-16 12:30:43,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:30:43,858 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:30:43,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:30:43,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:30:43,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:30:43,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:30:43" (1/1) ... [2023-12-16 12:30:43,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cab925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:43, skipping insertion in model container [2023-12-16 12:30:43,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:30:43" (1/1) ... [2023-12-16 12:30:43,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:30:44,004 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i[919,932] [2023-12-16 12:30:44,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:30:44,072 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:30:44,080 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i[919,932] [2023-12-16 12:30:44,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:30:44,124 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:30:44,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44 WrapperNode [2023-12-16 12:30:44,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:30:44,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:30:44,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:30:44,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:30:44,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,160 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 203 [2023-12-16 12:30:44,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:30:44,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:30:44,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:30:44,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:30:44,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,184 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 12:30:44,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:30:44,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:30:44,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:30:44,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:30:44,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (1/1) ... [2023-12-16 12:30:44,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:30:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:30:44,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 12:30:44,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 12:30:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:30:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:30:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:30:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:30:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:30:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:30:44,428 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:30:44,429 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:30:45,358 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:30:45,422 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:30:45,422 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:30:45,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:30:45 BoogieIcfgContainer [2023-12-16 12:30:45,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:30:45,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:30:45,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:30:45,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:30:45,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:30:43" (1/3) ... [2023-12-16 12:30:45,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a90509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:30:45, skipping insertion in model container [2023-12-16 12:30:45,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:30:44" (2/3) ... [2023-12-16 12:30:45,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a90509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:30:45, skipping insertion in model container [2023-12-16 12:30:45,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:30:45" (3/3) ... [2023-12-16 12:30:45,429 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-12-16 12:30:45,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:30:45,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:30:45,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:30:45,487 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;@6e3ab6c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:30:45,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:30:45,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 51 states have (on average 1.411764705882353) internal successors, (72), 52 states have internal predecessors, (72), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 12:30:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-16 12:30:45,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:30:45,511 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:30:45,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:30:45,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:30:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1752921971, now seen corresponding path program 1 times [2023-12-16 12:30:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:30:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398748660] [2023-12-16 12:30:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:30:45,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:30:45,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:30:45,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:30:45,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 12:30:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:30:45,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:30:45,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:30:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-12-16 12:30:45,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:30:45,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:30:45,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398748660] [2023-12-16 12:30:45,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398748660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:30:45,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:30:45,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:30:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953354124] [2023-12-16 12:30:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:30:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:30:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:30:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:30:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:30:45,900 INFO L87 Difference]: Start difference. First operand has 88 states, 51 states have (on average 1.411764705882353) internal successors, (72), 52 states have internal predecessors, (72), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-16 12:30:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:30:45,955 INFO L93 Difference]: Finished difference Result 173 states and 312 transitions. [2023-12-16 12:30:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:30:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 211 [2023-12-16 12:30:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:30:45,968 INFO L225 Difference]: With dead ends: 173 [2023-12-16 12:30:45,968 INFO L226 Difference]: Without dead ends: 86 [2023-12-16 12:30:45,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:30:45,973 INFO L413 NwaCegarLoop]: 132 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, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:30:45,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 12:30:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-16 12:30:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-16 12:30:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 12:30:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 135 transitions. [2023-12-16 12:30:46,005 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 135 transitions. Word has length 211 [2023-12-16 12:30:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:30:46,005 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 135 transitions. [2023-12-16 12:30:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-16 12:30:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 135 transitions. [2023-12-16 12:30:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-16 12:30:46,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:30:46,009 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:30:46,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 12:30:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:30:46,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:30:46,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:30:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1358753493, now seen corresponding path program 1 times [2023-12-16 12:30:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:30:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429510268] [2023-12-16 12:30:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:30:46,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:30:46,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:30:46,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:30:46,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 12:30:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:30:46,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 12:30:46,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:30:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 646 proven. 165 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2023-12-16 12:30:47,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:30:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 27 proven. 168 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-16 12:30:47,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:30:47,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429510268] [2023-12-16 12:30:47,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429510268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:30:47,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:30:47,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-16 12:30:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905052821] [2023-12-16 12:30:47,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:30:47,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 12:30:47,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:30:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 12:30:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-16 12:30:47,580 INFO L87 Difference]: Start difference. First operand 86 states and 135 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (63), 3 states have call predecessors, (63), 7 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-16 12:30:48,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:30:48,134 INFO L93 Difference]: Finished difference Result 181 states and 277 transitions. [2023-12-16 12:30:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 12:30:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (63), 3 states have call predecessors, (63), 7 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 211 [2023-12-16 12:30:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:30:48,140 INFO L225 Difference]: With dead ends: 181 [2023-12-16 12:30:48,140 INFO L226 Difference]: Without dead ends: 96 [2023-12-16 12:30:48,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-16 12:30:48,142 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 158 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:30:48,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 304 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 12:30:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-16 12:30:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2023-12-16 12:30:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 12:30:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 138 transitions. [2023-12-16 12:30:48,156 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 138 transitions. Word has length 211 [2023-12-16 12:30:48,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:30:48,156 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 138 transitions. [2023-12-16 12:30:48,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (63), 3 states have call predecessors, (63), 7 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-16 12:30:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 138 transitions. [2023-12-16 12:30:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 12:30:48,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:30:48,159 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:30:48,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 12:30:48,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:30:48,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:30:48,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:30:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1038107549, now seen corresponding path program 1 times [2023-12-16 12:30:48,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:30:48,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54229376] [2023-12-16 12:30:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:30:48,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:30:48,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:30:48,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:30:48,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 12:30:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:30:48,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 12:30:48,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:30:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 876 proven. 144 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-12-16 12:30:49,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:30:50,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:30:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54229376] [2023-12-16 12:30:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54229376] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:30:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2033085257] [2023-12-16 12:30:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:30:50,006 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:30:50,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:30:50,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:30:50,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 12:30:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:30:50,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 12:30:50,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:30:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 876 proven. 144 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-12-16 12:30:51,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:30:51,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2033085257] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:30:51,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:30:51,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-16 12:30:51,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284126912] [2023-12-16 12:30:51,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:30:51,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 12:30:51,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:30:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 12:30:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-16 12:30:51,582 INFO L87 Difference]: Start difference. First operand 94 states and 138 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-12-16 12:30:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:30:53,333 INFO L93 Difference]: Finished difference Result 197 states and 283 transitions. [2023-12-16 12:30:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 12:30:53,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 212 [2023-12-16 12:30:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:30:53,345 INFO L225 Difference]: With dead ends: 197 [2023-12-16 12:30:53,345 INFO L226 Difference]: Without dead ends: 104 [2023-12-16 12:30:53,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-16 12:30:53,346 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 104 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:30:53,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 329 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 12:30:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-16 12:30:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-12-16 12:30:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 12:30:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2023-12-16 12:30:53,365 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 212 [2023-12-16 12:30:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:30:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2023-12-16 12:30:53,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-12-16 12:30:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2023-12-16 12:30:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 12:30:53,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:30:53,368 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:30:53,391 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 (4)] Ended with exit code 0 [2023-12-16 12:30:53,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:30:53,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 12:30:53,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:30:53,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:30:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1296272987, now seen corresponding path program 1 times [2023-12-16 12:30:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:30:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543195977] [2023-12-16 12:30:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:30:53,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:30:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:30:53,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:30:53,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 12:30:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:30:54,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 12:30:54,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:31:38,153 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:31:38,153 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:31:39,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 12:31:39,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown