/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_fillercodesize_ps-cn-50_file-92.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:38:19,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:38:19,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:38:19,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:38:19,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:38:19,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:38:19,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:38:19,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:38:19,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:38:19,262 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:38:19,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:38:19,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:38:19,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:38:19,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:38:19,265 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:38:19,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:38:19,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:38:19,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:38:19,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:38:19,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:38:19,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:38:19,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:38:19,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:38:19,268 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:38:19,268 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:38:19,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:38:19,268 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:38:19,268 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:38:19,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:38:19,269 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:38:19,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:38:19,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:38:19,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:38:19,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:38:19,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:38:19,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:38:19,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:38:19,271 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:38:19,271 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:38:19,271 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:38:19,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:38:19,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:38:19,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:38:19,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:38:19,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:38:19,272 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:38:19,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:38:19,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:38:19,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:38:19,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:38:19,556 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:38:19,556 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:38:19,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-92.i [2023-12-16 11:38:20,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:38:20,986 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:38:20,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-92.i [2023-12-16 11:38:20,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea6bcf53/a59bb0ba85d04826b139d2a6fd15d0fe/FLAGe0e0a4024 [2023-12-16 11:38:21,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea6bcf53/a59bb0ba85d04826b139d2a6fd15d0fe [2023-12-16 11:38:21,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:38:21,014 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:38:21,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:38:21,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:38:21,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:38:21,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cff7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21, skipping insertion in model container [2023-12-16 11:38:21,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:38:21,195 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_fillercodesize_ps-cn-50_file-92.i[915,928] [2023-12-16 11:38:21,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:38:21,279 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:38:21,290 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_fillercodesize_ps-cn-50_file-92.i[915,928] [2023-12-16 11:38:21,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:38:21,337 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:38:21,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21 WrapperNode [2023-12-16 11:38:21,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:38:21,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:38:21,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:38:21,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:38:21,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,394 INFO L138 Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 233 [2023-12-16 11:38:21,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:38:21,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:38:21,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:38:21,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:38:21,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,432 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:38:21,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:38:21,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:38:21,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:38:21,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:38:21,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (1/1) ... [2023-12-16 11:38:21,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:38:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:38:21,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:38:21,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:38:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:38:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:38:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:38:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:38:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:38:21,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:38:21,674 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:38:21,679 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:38:22,197 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:38:22,284 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:38:22,285 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:38:22,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:38:22 BoogieIcfgContainer [2023-12-16 11:38:22,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:38:22,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:38:22,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:38:22,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:38:22,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:38:21" (1/3) ... [2023-12-16 11:38:22,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542e05a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:38:22, skipping insertion in model container [2023-12-16 11:38:22,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:38:21" (2/3) ... [2023-12-16 11:38:22,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542e05a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:38:22, skipping insertion in model container [2023-12-16 11:38:22,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:38:22" (3/3) ... [2023-12-16 11:38:22,293 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-92.i [2023-12-16 11:38:22,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:38:22,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:38:22,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:38:22,370 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;@8775090, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:38:22,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:38:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 56 states have internal predecessors, (79), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 11:38:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 11:38:22,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:38:22,408 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:38:22,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:38:22,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:38:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -502791646, now seen corresponding path program 1 times [2023-12-16 11:38:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:38:22,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062740316] [2023-12-16 11:38:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:38:22,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:38:22,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:38:22,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:38:22,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:38:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:38:22,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:38:22,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:38:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1424 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2023-12-16 11:38:22,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:38:22,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:38:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062740316] [2023-12-16 11:38:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062740316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:38:22,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:38:22,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:38:22,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614569921] [2023-12-16 11:38:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:38:22,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:38:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:38:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:38:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:38:22,878 INFO L87 Difference]: Start difference. First operand has 99 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 56 states have internal predecessors, (79), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-16 11:38:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:38:22,938 INFO L93 Difference]: Finished difference Result 195 states and 361 transitions. [2023-12-16 11:38:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:38:22,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 247 [2023-12-16 11:38:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:38:22,949 INFO L225 Difference]: With dead ends: 195 [2023-12-16 11:38:22,950 INFO L226 Difference]: Without dead ends: 97 [2023-12-16 11:38:22,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:38:22,961 INFO L413 NwaCegarLoop]: 153 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, 153 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:38:22,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 11:38:22,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-16 11:38:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-16 11:38:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 11:38:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 156 transitions. [2023-12-16 11:38:23,004 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 156 transitions. Word has length 247 [2023-12-16 11:38:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:38:23,004 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 156 transitions. [2023-12-16 11:38:23,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-16 11:38:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 156 transitions. [2023-12-16 11:38:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 11:38:23,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:38:23,009 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:38:23,023 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 11:38:23,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:38:23,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:38:23,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:38:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -964543196, now seen corresponding path program 1 times [2023-12-16 11:38:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:38:23,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278112159] [2023-12-16 11:38:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:38:23,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:38:23,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:38:23,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:38:23,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:38:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:38:23,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 11:38:23,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:38:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1374 proven. 33 refuted. 0 times theorem prover too weak. 1873 trivial. 0 not checked. [2023-12-16 11:38:25,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:38:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-16 11:38:25,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:38:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278112159] [2023-12-16 11:38:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278112159] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 11:38:25,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:38:25,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-16 11:38:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870749064] [2023-12-16 11:38:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:38:25,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:38:25,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:38:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:38:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:38:25,989 INFO L87 Difference]: Start difference. First operand 97 states and 156 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-16 11:38:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:38:26,487 INFO L93 Difference]: Finished difference Result 337 states and 540 transitions. [2023-12-16 11:38:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:38:26,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 247 [2023-12-16 11:38:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:38:26,494 INFO L225 Difference]: With dead ends: 337 [2023-12-16 11:38:26,494 INFO L226 Difference]: Without dead ends: 241 [2023-12-16 11:38:26,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:38:26,496 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 225 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:38:26,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 398 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 11:38:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-16 11:38:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 172. [2023-12-16 11:38:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 11:38:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 279 transitions. [2023-12-16 11:38:26,528 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 279 transitions. Word has length 247 [2023-12-16 11:38:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:38:26,529 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 279 transitions. [2023-12-16 11:38:26,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-16 11:38:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 279 transitions. [2023-12-16 11:38:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-16 11:38:26,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:38:26,533 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:38:26,549 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 11:38:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:38:26,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:38:26,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:38:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1551349210, now seen corresponding path program 1 times [2023-12-16 11:38:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:38:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592059819] [2023-12-16 11:38:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:38:26,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:38:26,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:38:26,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:38:26,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 11:38:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:38:27,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 11:38:27,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:38:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1559 proven. 69 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-12-16 11:38:27,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:38:27,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:38:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592059819] [2023-12-16 11:38:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592059819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:38:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1989508885] [2023-12-16 11:38:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:38:27,729 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:38:27,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:38:27,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:38:27,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 11:38:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:38:28,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 11:38:28,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:38:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-12-16 11:38:28,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:38:28,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1989508885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:38:28,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:38:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-12-16 11:38:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835084351] [2023-12-16 11:38:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:38:28,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:38:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:38:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:38:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-16 11:38:28,977 INFO L87 Difference]: Start difference. First operand 172 states and 279 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-16 11:38:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:38:29,312 INFO L93 Difference]: Finished difference Result 528 states and 852 transitions. [2023-12-16 11:38:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:38:29,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 247 [2023-12-16 11:38:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:38:29,326 INFO L225 Difference]: With dead ends: 528 [2023-12-16 11:38:29,326 INFO L226 Difference]: Without dead ends: 357 [2023-12-16 11:38:29,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-16 11:38:29,330 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 108 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:38:29,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 457 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:38:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-16 11:38:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 341. [2023-12-16 11:38:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 198 states have (on average 1.404040404040404) internal successors, (278), 200 states have internal predecessors, (278), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-16 11:38:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 554 transitions. [2023-12-16 11:38:29,431 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 554 transitions. Word has length 247 [2023-12-16 11:38:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:38:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 554 transitions. [2023-12-16 11:38:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-12-16 11:38:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 554 transitions. [2023-12-16 11:38:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-16 11:38:29,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:38:29,439 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:38:29,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:38:29,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-16 11:38:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:38:29,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:38:29,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:38:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash -889835491, now seen corresponding path program 1 times [2023-12-16 11:38:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:38:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212370535] [2023-12-16 11:38:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:38:29,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:38:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:38:29,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:38:29,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:38:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:38:30,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 11:38:30,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:38:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1559 proven. 69 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-12-16 11:38:30,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:38:30,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:38:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212370535] [2023-12-16 11:38:30,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212370535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:38:30,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1243761089] [2023-12-16 11:38:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:38:30,813 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:38:30,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:38:30,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:38:30,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 11:38:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:38:32,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 11:38:32,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:39:21,236 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:39:21,237 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:39:21,237 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:39:22,275 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 11:39:22,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:39:22,824 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