/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-ps-cn_file-37.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 15:14:49,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 15:14:49,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 15:14:49,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 15:14:49,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 15:14:49,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 15:14:49,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 15:14:49,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 15:14:49,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 15:14:49,447 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 15:14:49,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 15:14:49,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 15:14:49,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 15:14:49,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 15:14:49,450 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 15:14:49,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 15:14:49,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 15:14:49,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 15:14:49,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 15:14:49,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 15:14:49,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 15:14:49,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 15:14:49,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 15:14:49,452 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 15:14:49,453 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 15:14:49,453 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 15:14:49,453 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 15:14:49,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 15:14:49,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 15:14:49,454 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 15:14:49,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 15:14:49,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 15:14:49,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 15:14:49,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 15:14:49,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 15:14:49,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 15:14:49,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 15:14:49,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 15:14:49,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 15:14:49,457 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 15:14:49,457 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 15:14:49,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 15:14:49,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 15:14:49,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 15:14:49,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 15:14:49,704 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 15:14:49,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-37.i [2023-12-23 15:14:50,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 15:14:51,108 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 15:14:51,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-37.i [2023-12-23 15:14:51,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265f08b2d/8fdfa94d79a541999d59dec83a1347a5/FLAGf9e713d4a [2023-12-23 15:14:51,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265f08b2d/8fdfa94d79a541999d59dec83a1347a5 [2023-12-23 15:14:51,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 15:14:51,129 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 15:14:51,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 15:14:51,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 15:14:51,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 15:14:51,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103de735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51, skipping insertion in model container [2023-12-23 15:14:51,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 15:14:51,293 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-ps-cn_file-37.i[919,932] [2023-12-23 15:14:51,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 15:14:51,388 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 15:14:51,401 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-ps-cn_file-37.i[919,932] [2023-12-23 15:14:51,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 15:14:51,450 INFO L206 MainTranslator]: Completed translation [2023-12-23 15:14:51,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51 WrapperNode [2023-12-23 15:14:51,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 15:14:51,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 15:14:51,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 15:14:51,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 15:14:51,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,504 INFO L138 Inliner]: procedures = 27, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 217 [2023-12-23 15:14:51,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 15:14:51,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 15:14:51,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 15:14:51,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 15:14:51,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,537 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 15:14:51,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 15:14:51,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 15:14:51,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 15:14:51,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 15:14:51,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (1/1) ... [2023-12-23 15:14:51,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 15:14:51,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 15:14:51,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 15:14:51,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 15:14:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 15:14:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 15:14:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 15:14:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 15:14:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 15:14:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 15:14:51,769 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 15:14:51,772 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 15:15:01,021 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 15:15:01,076 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 15:15:01,076 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 15:15:01,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:15:01 BoogieIcfgContainer [2023-12-23 15:15:01,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 15:15:01,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 15:15:01,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 15:15:01,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 15:15:01,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:14:51" (1/3) ... [2023-12-23 15:15:01,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf78c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:15:01, skipping insertion in model container [2023-12-23 15:15:01,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:14:51" (2/3) ... [2023-12-23 15:15:01,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf78c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:15:01, skipping insertion in model container [2023-12-23 15:15:01,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:15:01" (3/3) ... [2023-12-23 15:15:01,084 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-37.i [2023-12-23 15:15:01,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 15:15:01,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 15:15:01,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 15:15:01,141 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;@21dbd73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 15:15:01,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 15:15:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 55 states have internal predecessors, (80), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-23 15:15:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-23 15:15:01,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:15:01,161 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:15:01,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:15:01,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:15:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1634516388, now seen corresponding path program 1 times [2023-12-23 15:15:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:15:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889347879] [2023-12-23 15:15:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:15:01,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:15:01,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:15:01,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:15:01,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 15:15:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:15:01,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 15:15:01,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:15:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1174 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2023-12-23 15:15:01,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:15:01,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:15:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889347879] [2023-12-23 15:15:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889347879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:15:01,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:15:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 15:15:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969728358] [2023-12-23 15:15:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:15:01,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 15:15:01,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:15:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 15:15:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 15:15:01,934 INFO L87 Difference]: Start difference. First operand has 93 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 55 states have internal predecessors, (80), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-23 15:15:06,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:15:06,166 INFO L93 Difference]: Finished difference Result 183 states and 338 transitions. [2023-12-23 15:15:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 15:15:06,234 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 222 [2023-12-23 15:15:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:15:06,241 INFO L225 Difference]: With dead ends: 183 [2023-12-23 15:15:06,241 INFO L226 Difference]: Without dead ends: 91 [2023-12-23 15:15:06,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 15:15:06,246 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-23 15:15:06,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-23 15:15:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-23 15:15:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-23 15:15:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-23 15:15:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 146 transitions. [2023-12-23 15:15:06,286 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 146 transitions. Word has length 222 [2023-12-23 15:15:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:15:06,287 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 146 transitions. [2023-12-23 15:15:06,287 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, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-23 15:15:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 146 transitions. [2023-12-23 15:15:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-23 15:15:06,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:15:06,292 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:15:06,314 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 [2023-12-23 15:15:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:15:06,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:15:06,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:15:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash 397477216, now seen corresponding path program 1 times [2023-12-23 15:15:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:15:06,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758899889] [2023-12-23 15:15:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:15:06,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:15:06,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:15:06,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:15:06,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 15:15:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:15:07,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 15:15:07,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:15:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-23 15:15:08,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 15:15:08,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:15:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758899889] [2023-12-23 15:15:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758899889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 15:15:08,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 15:15:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 15:15:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314596776] [2023-12-23 15:15:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 15:15:08,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 15:15:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:15:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 15:15:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 15:15:08,962 INFO L87 Difference]: Start difference. First operand 91 states and 146 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, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-23 15:15:13,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:17,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:21,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:25,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:29,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:33,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:15:34,257 INFO L93 Difference]: Finished difference Result 360 states and 579 transitions. [2023-12-23 15:15:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 15:15:34,259 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, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 222 [2023-12-23 15:15:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:15:34,266 INFO L225 Difference]: With dead ends: 360 [2023-12-23 15:15:34,267 INFO L226 Difference]: Without dead ends: 270 [2023-12-23 15:15:34,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 15:15:34,269 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 216 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2023-12-23 15:15:34,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 444 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 25.2s Time] [2023-12-23 15:15:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-23 15:15:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2023-12-23 15:15:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 154 states have (on average 1.396103896103896) internal successors, (215), 154 states have internal predecessors, (215), 108 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-23 15:15:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 431 transitions. [2023-12-23 15:15:34,343 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 431 transitions. Word has length 222 [2023-12-23 15:15:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:15:34,344 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 431 transitions. [2023-12-23 15:15:34,344 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, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-23 15:15:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 431 transitions. [2023-12-23 15:15:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-23 15:15:34,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:15:34,348 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:15:34,369 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 (3)] Ended with exit code 0 [2023-12-23 15:15:34,563 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 [2023-12-23 15:15:34,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:15:34,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:15:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1907396962, now seen corresponding path program 1 times [2023-12-23 15:15:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:15:34,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564439857] [2023-12-23 15:15:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:15:34,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:15:34,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:15:34,569 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) [2023-12-23 15:15:34,584 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 [2023-12-23 15:15:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:15:35,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 15:15:35,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:15:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 21 proven. 896 refuted. 0 times theorem prover too weak. 1603 trivial. 0 not checked. [2023-12-23 15:15:43,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 15:15:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-23 15:15:44,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 15:15:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564439857] [2023-12-23 15:15:44,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564439857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 15:15:44,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 15:15:44,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-23 15:15:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57876357] [2023-12-23 15:15:44,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 15:15:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-23 15:15:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 15:15:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-23 15:15:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-23 15:15:44,201 INFO L87 Difference]: Start difference. First operand 266 states and 431 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2023-12-23 15:15:48,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:51,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:53,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:15:57,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:16:01,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:16:05,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 15:16:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 15:16:05,930 INFO L93 Difference]: Finished difference Result 549 states and 876 transitions. [2023-12-23 15:16:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 15:16:05,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) Word has length 222 [2023-12-23 15:16:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 15:16:05,935 INFO L225 Difference]: With dead ends: 549 [2023-12-23 15:16:05,935 INFO L226 Difference]: Without dead ends: 284 [2023-12-23 15:16:05,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-23 15:16:05,938 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 261 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 186 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2023-12-23 15:16:05,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 203 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 220 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2023-12-23 15:16:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-23 15:16:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2023-12-23 15:16:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 163 states have internal predecessors, (221), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-23 15:16:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 437 transitions. [2023-12-23 15:16:05,977 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 437 transitions. Word has length 222 [2023-12-23 15:16:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 15:16:05,978 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 437 transitions. [2023-12-23 15:16:05,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2023-12-23 15:16:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 437 transitions. [2023-12-23 15:16:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-23 15:16:05,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 15:16:05,982 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 15:16:06,007 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 [2023-12-23 15:16:06,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:16:06,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 15:16:06,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 15:16:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 191940304, now seen corresponding path program 1 times [2023-12-23 15:16:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 15:16:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390443772] [2023-12-23 15:16:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 15:16:06,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 15:16:06,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 15:16:06,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 15:16:06,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 15:16:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 15:16:07,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-23 15:16:07,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 15:16:42,623 WARN L293 SmtUtils]: Spent 7.45s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:18:06,694 WARN L293 SmtUtils]: Spent 26.02s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:18:30,787 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:19:54,173 WARN L293 SmtUtils]: Spent 24.56s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:21:26,227 WARN L293 SmtUtils]: Spent 24.83s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:24:27,766 WARN L293 SmtUtils]: Spent 30.11s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:24:54,587 WARN L293 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:26:48,672 WARN L293 SmtUtils]: Spent 36.12s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 15:27:15,317 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 15:29:24,612 WARN L293 SmtUtils]: Spent 42.05s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-23 15:29:25,581 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 15:29:25,582 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 15:29:26,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 15:29:26,796 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-23 15:29:26,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown