/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_operatoramount_amount250_file-85.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 07:36:23,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 07:36:23,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 07:36:23,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 07:36:23,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 07:36:23,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 07:36:23,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 07:36:23,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 07:36:23,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 07:36:23,378 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 07:36:23,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 07:36:23,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 07:36:23,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 07:36:23,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 07:36:23,380 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 07:36:23,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 07:36:23,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 07:36:23,381 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 07:36:23,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 07:36:23,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 07:36:23,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 07:36:23,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 07:36:23,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 07:36:23,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 07:36:23,382 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 07:36:23,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 07:36:23,382 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 07:36:23,383 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 07:36:23,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 07:36:23,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 07:36:23,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 07:36:23,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 07:36:23,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 07:36:23,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 07:36:23,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 07:36:23,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 07:36:23,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 07:36:23,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 07:36:23,385 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 07:36:23,385 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 07:36:23,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 07:36:23,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 07:36:23,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 07:36:23,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 07:36:23,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 07:36:23,386 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 07:36:23,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 07:36:23,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 07:36:23,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 07:36:23,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 07:36:23,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 07:36:23,610 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 07:36:23,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-85.i [2023-12-24 07:36:24,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 07:36:24,864 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 07:36:24,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-85.i [2023-12-24 07:36:24,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603afcb8a/41db3e97a4e944bda9b47eab986e6250/FLAG7894d1cd8 [2023-12-24 07:36:24,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603afcb8a/41db3e97a4e944bda9b47eab986e6250 [2023-12-24 07:36:24,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 07:36:24,891 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 07:36:24,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 07:36:24,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 07:36:24,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 07:36:24,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:36:24" (1/1) ... [2023-12-24 07:36:24,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dacdc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:24, skipping insertion in model container [2023-12-24 07:36:24,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:36:24" (1/1) ... [2023-12-24 07:36:24,933 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 07:36:25,042 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_operatoramount_amount250_file-85.i[916,929] [2023-12-24 07:36:25,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 07:36:25,169 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 07:36:25,178 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_operatoramount_amount250_file-85.i[916,929] [2023-12-24 07:36:25,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 07:36:25,254 INFO L206 MainTranslator]: Completed translation [2023-12-24 07:36:25,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25 WrapperNode [2023-12-24 07:36:25,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 07:36:25,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 07:36:25,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 07:36:25,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 07:36:25,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,333 INFO L138 Inliner]: procedures = 27, calls = 65, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 398 [2023-12-24 07:36:25,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 07:36:25,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 07:36:25,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 07:36:25,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 07:36:25,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,409 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]. [2023-12-24 07:36:25,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 07:36:25,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 07:36:25,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 07:36:25,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 07:36:25,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (1/1) ... [2023-12-24 07:36:25,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 07:36:25,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 07:36:25,507 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) [2023-12-24 07:36:25,514 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 [2023-12-24 07:36:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 07:36:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 07:36:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 07:36:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 07:36:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 07:36:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 07:36:25,608 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 07:36:25,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 07:37:00,701 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 07:37:00,737 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 07:37:00,737 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 07:37:00,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:37:00 BoogieIcfgContainer [2023-12-24 07:37:00,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 07:37:00,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 07:37:00,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 07:37:00,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 07:37:00,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 07:36:24" (1/3) ... [2023-12-24 07:37:00,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1407da7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:37:00, skipping insertion in model container [2023-12-24 07:37:00,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:36:25" (2/3) ... [2023-12-24 07:37:00,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1407da7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:37:00, skipping insertion in model container [2023-12-24 07:37:00,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:37:00" (3/3) ... [2023-12-24 07:37:00,743 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-85.i [2023-12-24 07:37:00,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 07:37:00,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 07:37:00,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 07:37:00,796 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;@34a3a027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 07:37:00,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 07:37:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 98 states have internal predecessors, (144), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 07:37:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-24 07:37:00,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:37:00,820 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:37:00,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:37:00,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:37:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 939585717, now seen corresponding path program 1 times [2023-12-24 07:37:00,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:37:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356751360] [2023-12-24 07:37:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:37:00,840 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 [2023-12-24 07:37:00,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:37:00,842 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) [2023-12-24 07:37:00,853 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 [2023-12-24 07:37:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:37:03,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 07:37:03,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:37:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2694 proven. 0 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2023-12-24 07:37:03,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:37:03,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:37:03,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356751360] [2023-12-24 07:37:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356751360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:37:03,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:37:03,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 07:37:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211761151] [2023-12-24 07:37:03,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:37:03,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 07:37:03,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:37:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 07:37:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 07:37:03,951 INFO L87 Difference]: Start difference. First operand has 152 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 98 states have internal predecessors, (144), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-24 07:37:10,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:37:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:37:10,434 INFO L93 Difference]: Finished difference Result 301 states and 546 transitions. [2023-12-24 07:37:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 07:37:11,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 335 [2023-12-24 07:37:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:37:11,274 INFO L225 Difference]: With dead ends: 301 [2023-12-24 07:37:11,274 INFO L226 Difference]: Without dead ends: 150 [2023-12-24 07:37:11,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 07:37:11,281 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-24 07:37:11,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2023-12-24 07:37:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-24 07:37:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-24 07:37:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-24 07:37:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 243 transitions. [2023-12-24 07:37:11,335 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 243 transitions. Word has length 335 [2023-12-24 07:37:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:37:11,335 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 243 transitions. [2023-12-24 07:37:11,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-24 07:37:11,336 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 243 transitions. [2023-12-24 07:37:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-24 07:37:11,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:37:11,341 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:37:11,440 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 [2023-12-24 07:37:11,541 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 [2023-12-24 07:37:11,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:37:11,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:37:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash 678316605, now seen corresponding path program 1 times [2023-12-24 07:37:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:37:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110798970] [2023-12-24 07:37:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:37:11,545 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 [2023-12-24 07:37:11,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:37:11,564 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) [2023-12-24 07:37:11,581 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 [2023-12-24 07:37:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:37:14,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 07:37:14,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:37:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-24 07:37:47,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:37:47,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:37:47,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110798970] [2023-12-24 07:37:47,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110798970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:37:47,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:37:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 07:37:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120703970] [2023-12-24 07:37:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:37:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 07:37:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:37:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 07:37:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 07:37:47,976 INFO L87 Difference]: Start difference. First operand 150 states and 243 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:37:52,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:37:55,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:01,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:05,312 WARN L539 Checker$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 [] [2023-12-24 07:38:09,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:16,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:20,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:24,025 WARN L539 Checker$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 [] [2023-12-24 07:38:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:38:24,025 INFO L93 Difference]: Finished difference Result 449 states and 728 transitions. [2023-12-24 07:38:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 07:38:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 335 [2023-12-24 07:38:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:38:24,861 INFO L225 Difference]: With dead ends: 449 [2023-12-24 07:38:24,861 INFO L226 Difference]: Without dead ends: 300 [2023-12-24 07:38:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 07:38:24,863 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 184 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 105 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2023-12-24 07:38:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 709 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 35.7s Time] [2023-12-24 07:38:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-24 07:38:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2023-12-24 07:38:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 146 states have (on average 1.36986301369863) internal successors, (200), 146 states have internal predecessors, (200), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 07:38:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 408 transitions. [2023-12-24 07:38:24,911 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 408 transitions. Word has length 335 [2023-12-24 07:38:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:38:24,914 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 408 transitions. [2023-12-24 07:38:24,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:38:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 408 transitions. [2023-12-24 07:38:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-24 07:38:24,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:38:24,922 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:38:24,992 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 [2023-12-24 07:38:25,135 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 [2023-12-24 07:38:25,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:38:25,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:38:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 194255565, now seen corresponding path program 1 times [2023-12-24 07:38:25,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:38:25,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685881095] [2023-12-24 07:38:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:38:25,137 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 [2023-12-24 07:38:25,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:38:25,139 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) [2023-12-24 07:38:25,151 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 [2023-12-24 07:38:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:38:28,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 07:38:28,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:38:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2701 proven. 78 refuted. 0 times theorem prover too weak. 2525 trivial. 0 not checked. [2023-12-24 07:38:38,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:38:40,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:38:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685881095] [2023-12-24 07:38:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685881095] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:38:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1485401578] [2023-12-24 07:38:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:38:40,038 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:38:40,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:38:40,085 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) [2023-12-24 07:38:40,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 07:38:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:38:41,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 07:38:41,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:38:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-24 07:38:43,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:38:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1485401578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:38:43,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:38:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-24 07:38:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853513204] [2023-12-24 07:38:43,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:38:43,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 07:38:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:38:43,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 07:38:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 07:38:43,200 INFO L87 Difference]: Start difference. First operand 253 states and 408 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:38:50,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:38:54,037 WARN L539 Checker$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 [] [2023-12-24 07:38:58,046 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 [] [2023-12-24 07:38:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:38:59,021 INFO L93 Difference]: Finished difference Result 548 states and 886 transitions. [2023-12-24 07:38:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 07:38:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 336 [2023-12-24 07:38:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:38:59,025 INFO L225 Difference]: With dead ends: 548 [2023-12-24 07:38:59,025 INFO L226 Difference]: Without dead ends: 399 [2023-12-24 07:38:59,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 07:38:59,026 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 215 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-12-24 07:38:59,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 636 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2023-12-24 07:38:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-24 07:38:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 279. [2023-12-24 07:38:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 172 states have (on average 1.4069767441860466) internal successors, (242), 172 states have internal predecessors, (242), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 07:38:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 450 transitions. [2023-12-24 07:38:59,050 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 450 transitions. Word has length 336 [2023-12-24 07:38:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:38:59,051 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 450 transitions. [2023-12-24 07:38:59,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:38:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 450 transitions. [2023-12-24 07:38:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-24 07:38:59,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:38:59,053 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:38:59,123 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 [2023-12-24 07:38:59,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-24 07:38:59,466 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 [2023-12-24 07:38:59,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:38:59,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:38:59,467 INFO L85 PathProgramCache]: Analyzing trace with hash 470430204, now seen corresponding path program 1 times [2023-12-24 07:38:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:38:59,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272074478] [2023-12-24 07:38:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:38:59,468 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 [2023-12-24 07:38:59,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:38:59,471 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) [2023-12-24 07:38:59,472 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 [2023-12-24 07:39:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:02,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 07:39:02,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2701 proven. 78 refuted. 0 times theorem prover too weak. 2525 trivial. 0 not checked. [2023-12-24 07:39:12,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:39:14,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:39:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272074478] [2023-12-24 07:39:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272074478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:39:14,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081867937] [2023-12-24 07:39:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:14,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:39:14,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:39:14,425 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) [2023-12-24 07:39:14,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 07:39:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:15,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 07:39:15,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-24 07:39:16,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:39:16,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2081867937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:39:16,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:39:16,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-24 07:39:16,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732415806] [2023-12-24 07:39:16,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:39:16,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 07:39:16,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:39:16,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 07:39:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 07:39:16,891 INFO L87 Difference]: Start difference. First operand 279 states and 450 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:39:20,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:22,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:29,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:33,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:37,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:39:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:39:38,093 INFO L93 Difference]: Finished difference Result 626 states and 1012 transitions. [2023-12-24 07:39:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 07:39:38,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 337 [2023-12-24 07:39:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:39:38,097 INFO L225 Difference]: With dead ends: 626 [2023-12-24 07:39:38,097 INFO L226 Difference]: Without dead ends: 451 [2023-12-24 07:39:38,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-24 07:39:38,099 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 223 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-24 07:39:38,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 461 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 3 Unknown, 0 Unchecked, 21.2s Time] [2023-12-24 07:39:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-24 07:39:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 449. [2023-12-24 07:39:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 289 states have (on average 1.411764705882353) internal successors, (408), 289 states have internal predecessors, (408), 156 states have call successors, (156), 3 states have call predecessors, (156), 3 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-12-24 07:39:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 720 transitions. [2023-12-24 07:39:38,127 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 720 transitions. Word has length 337 [2023-12-24 07:39:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:39:38,128 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 720 transitions. [2023-12-24 07:39:38,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:39:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 720 transitions. [2023-12-24 07:39:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-24 07:39:38,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:39:38,130 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:39:38,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 07:39:38,403 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 (6)] Forceful destruction successful, exit code 0 [2023-12-24 07:39:38,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /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 [2023-12-24 07:39:38,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:39:38,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:39:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1686970007, now seen corresponding path program 1 times [2023-12-24 07:39:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:39:38,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928518251] [2023-12-24 07:39:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:38,554 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 [2023-12-24 07:39:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:39:38,555 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-12-24 07:39:38,557 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 (8)] Waiting until timeout for monitored process [2023-12-24 07:39:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:39:41,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 07:39:41,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:39:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2701 proven. 78 refuted. 0 times theorem prover too weak. 2525 trivial. 0 not checked. [2023-12-24 07:39:52,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:39:54,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:39:54,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928518251] [2023-12-24 07:39:54,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928518251] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:39:54,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [348234403] [2023-12-24 07:39:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:39:54,488 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:39:54,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:39:54,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:39:54,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 07:40:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:40:00,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 07:40:00,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:40:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-24 07:40:19,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:40:19,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [348234403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:40:19,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:40:19,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-24 07:40:19,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468684930] [2023-12-24 07:40:19,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:40:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 07:40:19,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:40:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 07:40:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:40:19,948 INFO L87 Difference]: Start difference. First operand 449 states and 720 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:40:35,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:40:39,542 WARN L539 Checker$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 [0] [2023-12-24 07:40:43,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:40:47,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:40:51,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:40:52,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:40:59,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:03,659 WARN L539 Checker$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 [0] [2023-12-24 07:41:07,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:11,690 WARN L539 Checker$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 [] [2023-12-24 07:41:11,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:41:11,693 INFO L93 Difference]: Finished difference Result 1320 states and 2124 transitions. [2023-12-24 07:41:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 07:41:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 338 [2023-12-24 07:41:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:41:12,575 INFO L225 Difference]: With dead ends: 1320 [2023-12-24 07:41:12,575 INFO L226 Difference]: Without dead ends: 975 [2023-12-24 07:41:12,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 07:41:12,577 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 229 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 105 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.8s IncrementalHoareTripleChecker+Time [2023-12-24 07:41:12,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 963 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 130 Invalid, 9 Unknown, 0 Unchecked, 50.8s Time] [2023-12-24 07:41:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-24 07:41:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 713. [2023-12-24 07:41:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 500 states have (on average 1.466) internal successors, (733), 500 states have internal predecessors, (733), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 208 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-24 07:41:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1149 transitions. [2023-12-24 07:41:12,629 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1149 transitions. Word has length 338 [2023-12-24 07:41:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:41:12,634 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1149 transitions. [2023-12-24 07:41:12,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:41:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1149 transitions. [2023-12-24 07:41:12,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-24 07:41:12,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:41:12,636 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:41:12,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-24 07:41:12,921 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 (8)] Forceful destruction successful, exit code 0 [2023-12-24 07:41:13,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /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 [2023-12-24 07:41:13,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:41:13,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:41:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2081336793, now seen corresponding path program 1 times [2023-12-24 07:41:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:41:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399398121] [2023-12-24 07:41:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:41:13,055 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 [2023-12-24 07:41:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:41:13,056 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-24 07:41:13,058 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 (10)] Waiting until timeout for monitored process [2023-12-24 07:41:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:41:16,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 07:41:16,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:41:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1891 proven. 33 refuted. 0 times theorem prover too weak. 3380 trivial. 0 not checked. [2023-12-24 07:41:21,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:41:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 120 proven. 33 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-24 07:41:25,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:41:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399398121] [2023-12-24 07:41:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399398121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:41:25,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:41:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 07:41:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527548571] [2023-12-24 07:41:25,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:41:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 07:41:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:41:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 07:41:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 07:41:25,661 INFO L87 Difference]: Start difference. First operand 713 states and 1149 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-24 07:41:42,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:46,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:50,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:41:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:41:50,429 INFO L93 Difference]: Finished difference Result 1332 states and 2128 transitions. [2023-12-24 07:41:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 07:41:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 338 [2023-12-24 07:41:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:41:51,368 INFO L225 Difference]: With dead ends: 1332 [2023-12-24 07:41:51,368 INFO L226 Difference]: Without dead ends: 737 [2023-12-24 07:41:51,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 668 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:41:51,370 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 159 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2023-12-24 07:41:51,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 444 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 3 Unknown, 0 Unchecked, 23.8s Time] [2023-12-24 07:41:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-24 07:41:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 729. [2023-12-24 07:41:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 512 states have (on average 1.439453125) internal successors, (737), 512 states have internal predecessors, (737), 208 states have call successors, (208), 8 states have call predecessors, (208), 8 states have return successors, (208), 208 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-24 07:41:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1153 transitions. [2023-12-24 07:41:51,412 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1153 transitions. Word has length 338 [2023-12-24 07:41:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:41:51,414 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1153 transitions. [2023-12-24 07:41:51,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-24 07:41:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1153 transitions. [2023-12-24 07:41:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-24 07:41:51,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:41:51,417 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:41:51,487 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 (10)] Forceful destruction successful, exit code 0 [2023-12-24 07:41:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-24 07:41:51,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:41:51,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:41:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1574072670, now seen corresponding path program 1 times [2023-12-24 07:41:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:41:51,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993483083] [2023-12-24 07:41:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:41:51,632 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 [2023-12-24 07:41:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:41:51,633 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-24 07:41:51,636 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 (11)] Waiting until timeout for monitored process [2023-12-24 07:41:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:41:55,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 07:41:55,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:42:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-24 07:42:15,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:42:15,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:42:15,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993483083] [2023-12-24 07:42:15,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993483083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:42:15,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:42:15,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 07:42:15,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578114106] [2023-12-24 07:42:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:42:15,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 07:42:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:42:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 07:42:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 07:42:15,066 INFO L87 Difference]: Start difference. First operand 729 states and 1153 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:42:17,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:42:23,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:42:27,680 WARN L539 Checker$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 [] [2023-12-24 07:42:31,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:42:32,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:42:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:42:32,718 INFO L93 Difference]: Finished difference Result 1919 states and 3035 transitions. [2023-12-24 07:42:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 07:42:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 340 [2023-12-24 07:42:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:42:32,726 INFO L225 Difference]: With dead ends: 1919 [2023-12-24 07:42:32,726 INFO L226 Difference]: Without dead ends: 1312 [2023-12-24 07:42:32,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 07:42:32,729 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 83 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-24 07:42:32,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 475 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 3 Unknown, 0 Unchecked, 17.6s Time] [2023-12-24 07:42:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-24 07:42:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1306. [2023-12-24 07:42:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 927 states have (on average 1.4412081984897518) internal successors, (1336), 927 states have internal predecessors, (1336), 364 states have call successors, (364), 14 states have call predecessors, (364), 14 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2023-12-24 07:42:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2064 transitions. [2023-12-24 07:42:32,821 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2064 transitions. Word has length 340 [2023-12-24 07:42:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:42:32,822 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 2064 transitions. [2023-12-24 07:42:32,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:42:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2064 transitions. [2023-12-24 07:42:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-24 07:42:32,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:42:32,826 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:42:32,899 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 (11)] Forceful destruction successful, exit code 0 [2023-12-24 07:42:33,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-24 07:42:33,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:42:33,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:42:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2019294752, now seen corresponding path program 1 times [2023-12-24 07:42:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:42:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448976374] [2023-12-24 07:42:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:42:33,042 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 [2023-12-24 07:42:33,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:42:33,043 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-24 07:42:33,077 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 (12)] Waiting until timeout for monitored process [2023-12-24 07:42:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:42:36,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 07:42:36,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:43:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1838 proven. 252 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2023-12-24 07:43:11,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:43:19,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:43:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448976374] [2023-12-24 07:43:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448976374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:43:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055433058] [2023-12-24 07:43:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:43:19,504 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:43:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:43:19,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:43:19,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 07:43:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:43:28,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 07:43:28,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:43:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-24 07:43:36,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:43:36,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1055433058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:43:36,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:43:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-24 07:43:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3761654] [2023-12-24 07:43:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:43:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 07:43:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:43:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 07:43:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-24 07:43:36,289 INFO L87 Difference]: Start difference. First operand 1306 states and 2064 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:43:52,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:43:56,816 WARN L539 Checker$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 [] [2023-12-24 07:44:00,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:04,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:08,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:12,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:16,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:20,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:24,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:28,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:33,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:37,016 WARN L539 Checker$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 [] [2023-12-24 07:44:41,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:44:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:44:54,072 INFO L93 Difference]: Finished difference Result 5494 states and 8627 transitions. [2023-12-24 07:44:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 07:44:54,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 340 [2023-12-24 07:44:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:44:54,089 INFO L225 Difference]: With dead ends: 5494 [2023-12-24 07:44:54,089 INFO L226 Difference]: Without dead ends: 4310 [2023-12-24 07:44:54,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 943 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-12-24 07:44:54,094 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 794 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 260 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.3s IncrementalHoareTripleChecker+Time [2023-12-24 07:44:54,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1271 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 562 Invalid, 12 Unknown, 0 Unchecked, 75.3s Time] [2023-12-24 07:44:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2023-12-24 07:44:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 2358. [2023-12-24 07:44:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 1611 states have (on average 1.3904407200496587) internal successors, (2240), 1619 states have internal predecessors, (2240), 716 states have call successors, (716), 30 states have call predecessors, (716), 30 states have return successors, (716), 708 states have call predecessors, (716), 716 states have call successors, (716) [2023-12-24 07:44:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 3672 transitions. [2023-12-24 07:44:54,343 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 3672 transitions. Word has length 340 [2023-12-24 07:44:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:44:54,343 INFO L495 AbstractCegarLoop]: Abstraction has 2358 states and 3672 transitions. [2023-12-24 07:44:54,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-24 07:44:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 3672 transitions. [2023-12-24 07:44:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-24 07:44:54,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:44:54,346 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:44:54,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-24 07:44:54,639 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 (12)] Forceful destruction successful, exit code 0 [2023-12-24 07:44:54,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /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 [2023-12-24 07:44:54,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:44:54,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:44:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash 982592416, now seen corresponding path program 1 times [2023-12-24 07:44:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:44:54,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729682722] [2023-12-24 07:44:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:44:54,764 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 [2023-12-24 07:44:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:44:54,781 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-24 07:44:54,808 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 (14)] Waiting until timeout for monitored process [2023-12-24 07:44:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:44:58,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 07:44:58,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:45:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1838 proven. 252 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2023-12-24 07:45:34,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:45:42,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:45:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729682722] [2023-12-24 07:45:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729682722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:45:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329564480] [2023-12-24 07:45:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:45:42,925 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:45:42,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:45:42,926 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:45:42,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 07:45:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:45:54,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 07:45:54,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:46:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1838 proven. 252 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2023-12-24 07:46:27,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:46:33,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [329564480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:46:33,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:46:33,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-24 07:46:33,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510629412] [2023-12-24 07:46:33,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:46:33,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 07:46:33,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:46:33,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 07:46:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-24 07:46:33,330 INFO L87 Difference]: Start difference. First operand 2358 states and 3672 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 3 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-12-24 07:46:37,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:03,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:12,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:16,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:20,092 WARN L539 Checker$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 [] [2023-12-24 07:47:24,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:28,124 WARN L539 Checker$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 [] [2023-12-24 07:47:32,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:47:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:47:32,305 INFO L93 Difference]: Finished difference Result 4782 states and 7309 transitions. [2023-12-24 07:47:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 07:47:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 3 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 340 [2023-12-24 07:47:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:47:33,233 INFO L225 Difference]: With dead ends: 4782 [2023-12-24 07:47:33,233 INFO L226 Difference]: Without dead ends: 2546 [2023-12-24 07:47:33,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1235 GetRequests, 1219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-24 07:47:33,238 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 229 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 18 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.6s IncrementalHoareTripleChecker+Time [2023-12-24 07:47:33,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 681 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 705 Invalid, 6 Unknown, 0 Unchecked, 56.6s Time] [2023-12-24 07:47:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-12-24 07:47:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2478. [2023-12-24 07:47:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 1701 states have (on average 1.3556731334509113) internal successors, (2306), 1709 states have internal predecessors, (2306), 716 states have call successors, (716), 60 states have call predecessors, (716), 60 states have return successors, (716), 708 states have call predecessors, (716), 716 states have call successors, (716) [2023-12-24 07:47:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3738 transitions. [2023-12-24 07:47:33,408 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3738 transitions. Word has length 340 [2023-12-24 07:47:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:47:33,409 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3738 transitions. [2023-12-24 07:47:33,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 3 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-12-24 07:47:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3738 transitions. [2023-12-24 07:47:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-24 07:47:33,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:47:33,411 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:47:33,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 07:47:33,704 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 (14)] Forceful destruction successful, exit code 0 [2023-12-24 07:47:33,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 [2023-12-24 07:47:33,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:47:33,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:47:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1389146846, now seen corresponding path program 1 times [2023-12-24 07:47:33,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:47:33,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535427561] [2023-12-24 07:47:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:47:33,838 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 [2023-12-24 07:47:33,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:47:33,839 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-24 07:47:33,850 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 (16)] Waiting until timeout for monitored process [2023-12-24 07:47:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:47:37,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:47:37,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:48:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1947 proven. 117 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2023-12-24 07:48:19,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:48:31,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:48:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535427561] [2023-12-24 07:48:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535427561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:48:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1771724117] [2023-12-24 07:48:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:48:31,071 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:48:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:48:31,073 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:48:31,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 07:48:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:48:43,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 07:48:43,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:49:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1947 proven. 117 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2023-12-24 07:49:20,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:49:31,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1771724117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:49:31,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:49:31,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-24 07:49:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373287995] [2023-12-24 07:49:31,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:49:31,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 07:49:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:49:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 07:49:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-24 07:49:31,437 INFO L87 Difference]: Start difference. First operand 2478 states and 3738 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-24 07:49:48,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:52,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:54,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:01,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:05,992 WARN L539 Checker$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 [] [2023-12-24 07:50:09,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:14,011 WARN L539 Checker$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 [] [2023-12-24 07:50:18,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:22,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:26,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:30,071 WARN L539 Checker$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 [] [2023-12-24 07:50:34,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:35,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:41,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:45,991 WARN L539 Checker$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 [] [2023-12-24 07:50:50,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:54,020 WARN L539 Checker$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 [] [2023-12-24 07:50:58,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:51:02,034 WARN L539 Checker$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 [] Received shutdown request... [2023-12-24 07:51:03,435 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 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 07:51:03,435 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 [2023-12-24 07:51:03,435 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 07:51:04,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-24 07:51:04,538 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 07:51:04,648 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 [2023-12-24 07:51:04,811 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 [2023-12-24 07:51:04,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-12-24 07:51:04,813 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 278 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 139 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.6s IncrementalHoareTripleChecker+Time [2023-12-24 07:51:04,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1040 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 405 Invalid, 15 Unknown, 0 Unchecked, 86.6s Time] [2023-12-24 07:51:04,814 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 07:51:04,814 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-24 07:51:04,818 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:51:04,820 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 07:51:04,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 07:51:04 BoogieIcfgContainer [2023-12-24 07:51:04,821 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 07:51:04,821 INFO L158 Benchmark]: Toolchain (without parser) took 879931.06ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 136.6MB in the beginning and 138.1MB in the end (delta: -1.5MB). Peak memory consumption was 136.7MB. Max. memory is 8.0GB. [2023-12-24 07:51:04,822 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 07:51:04,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.59ms. Allocated memory is still 195.0MB. Free memory was 136.3MB in the beginning and 111.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-24 07:51:04,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.83ms. Allocated memory is still 195.0MB. Free memory was 111.5MB in the beginning and 106.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 07:51:04,822 INFO L158 Benchmark]: Boogie Preprocessor took 145.90ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 106.9MB in the beginning and 195.1MB in the end (delta: -88.2MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2023-12-24 07:51:04,822 INFO L158 Benchmark]: RCFGBuilder took 35256.84ms. Allocated memory is still 234.9MB. Free memory was 195.1MB in the beginning and 138.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-12-24 07:51:04,822 INFO L158 Benchmark]: TraceAbstraction took 844082.40ms. Allocated memory is still 234.9MB. Free memory was 138.0MB in the beginning and 138.1MB in the end (delta: -97.8kB). Peak memory consumption was 97.4MB. Max. memory is 8.0GB. [2023-12-24 07:51:04,827 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 363.59ms. Allocated memory is still 195.0MB. Free memory was 136.3MB in the beginning and 111.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.83ms. Allocated memory is still 195.0MB. Free memory was 111.5MB in the beginning and 106.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 145.90ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 106.9MB in the beginning and 195.1MB in the end (delta: -88.2MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * RCFGBuilder took 35256.84ms. Allocated memory is still 234.9MB. Free memory was 195.1MB in the beginning and 138.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * TraceAbstraction took 844082.40ms. Allocated memory is still 234.9MB. Free memory was 138.0MB in the beginning and 138.1MB in the end (delta: -97.8kB). Peak memory consumption was 97.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 152 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 844.0s, OverallIterations: 10, TraceHistogramMax: 52, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 408.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 mSolverCounterUnknown, 2440 SdHoareTripleChecker+Valid, 389.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2394 mSDsluCounter, 6920 SdHoareTripleChecker+Invalid, 381.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4266 mSDsCounter, 649 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2127 IncrementalHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 649 mSolverCounterUnsat, 2654 mSDtfsCounter, 2127 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6822 GetRequests, 6733 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 32.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2478occurred in iteration=9, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2465 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 71.2s SatisfiabilityAnalysisTime, 359.0s InterpolantComputationTime, 5410 NumberOfCodeBlocks, 5410 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5731 ConstructedInterpolants, 8 QuantifiedInterpolants, 21972 SizeOfPredicates, 54 NumberOfNonLiveVariables, 9430 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 88878/90168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown