/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_loopvsstraightlinecode_100-1loop_file-22.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 13:32:01,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 13:32:01,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 13:32:01,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 13:32:01,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 13:32:01,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 13:32:01,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 13:32:01,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 13:32:01,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 13:32:01,997 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 13:32:01,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 13:32:01,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 13:32:01,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 13:32:01,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 13:32:01,999 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 13:32:01,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 13:32:01,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 13:32:01,999 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 13:32:01,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 13:32:02,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 13:32:02,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 13:32:02,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 13:32:02,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 13:32:02,009 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 13:32:02,009 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 13:32:02,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 13:32:02,009 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 13:32:02,009 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 13:32:02,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 13:32:02,010 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 13:32:02,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 13:32:02,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:32:02,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 13:32:02,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 13:32:02,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 13:32:02,012 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 13:32:02,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 13:32:02,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 13:32:02,012 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 13:32:02,012 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 13:32:02,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 13:32:02,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 13:32:02,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 13:32:02,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 13:32:02,227 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 13:32:02,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-22.i [2023-12-16 13:32:03,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 13:32:03,508 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 13:32:03,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-22.i [2023-12-16 13:32:03,542 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02a98562/013646eb540c4054950649bb5b7deee0/FLAG8caf8170b [2023-12-16 13:32:03,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02a98562/013646eb540c4054950649bb5b7deee0 [2023-12-16 13:32:03,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 13:32:03,560 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 13:32:03,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 13:32:03,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 13:32:03,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 13:32:03,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ade2bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03, skipping insertion in model container [2023-12-16 13:32:03,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 13:32:03,698 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_loopvsstraightlinecode_100-1loop_file-22.i[916,929] [2023-12-16 13:32:03,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:32:03,788 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 13:32:03,797 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_loopvsstraightlinecode_100-1loop_file-22.i[916,929] [2023-12-16 13:32:03,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 13:32:03,862 INFO L206 MainTranslator]: Completed translation [2023-12-16 13:32:03,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03 WrapperNode [2023-12-16 13:32:03,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 13:32:03,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 13:32:03,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 13:32:03,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 13:32:03,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,937 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216 [2023-12-16 13:32:03,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 13:32:03,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 13:32:03,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 13:32:03,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 13:32:03,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,975 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 13:32:03,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:03,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:04,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:04,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:04,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 13:32:04,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 13:32:04,006 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 13:32:04,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 13:32:04,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (1/1) ... [2023-12-16 13:32:04,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 13:32:04,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 13:32:04,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 13:32:04,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 13:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 13:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 13:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 13:32:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 13:32:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 13:32:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 13:32:04,191 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 13:32:04,193 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 13:32:05,371 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 13:32:05,420 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 13:32:05,420 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 13:32:05,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:32:05 BoogieIcfgContainer [2023-12-16 13:32:05,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 13:32:05,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 13:32:05,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 13:32:05,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 13:32:05,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:32:03" (1/3) ... [2023-12-16 13:32:05,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce6f9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:32:05, skipping insertion in model container [2023-12-16 13:32:05,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:32:03" (2/3) ... [2023-12-16 13:32:05,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce6f9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:32:05, skipping insertion in model container [2023-12-16 13:32:05,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:32:05" (3/3) ... [2023-12-16 13:32:05,426 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-22.i [2023-12-16 13:32:05,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 13:32:05,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 13:32:05,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 13:32:05,480 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;@25e32a28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 13:32:05,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 13:32:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 48 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 13:32:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-16 13:32:05,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:05,509 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:05,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:05,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash 712418550, now seen corresponding path program 1 times [2023-12-16 13:32:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253044597] [2023-12-16 13:32:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:05,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:05,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:05,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 13:32:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:05,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 13:32:05,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 924 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2023-12-16 13:32:05,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:05,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253044597] [2023-12-16 13:32:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253044597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:05,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:32:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 13:32:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767819531] [2023-12-16 13:32:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:05,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 13:32:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 13:32:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 13:32:05,811 INFO L87 Difference]: Start difference. First operand has 81 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 48 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 13:32:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:06,403 INFO L93 Difference]: Finished difference Result 161 states and 292 transitions. [2023-12-16 13:32:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 13:32:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 189 [2023-12-16 13:32:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:06,410 INFO L225 Difference]: With dead ends: 161 [2023-12-16 13:32:06,411 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 13:32:06,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 13:32:06,416 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:06,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 13:32:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 13:32:06,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-16 13:32:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 13:32:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 126 transitions. [2023-12-16 13:32:06,466 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 126 transitions. Word has length 189 [2023-12-16 13:32:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:06,466 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 126 transitions. [2023-12-16 13:32:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 13:32:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 126 transitions. [2023-12-16 13:32:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-16 13:32:06,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:06,470 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:06,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 13:32:06,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:06,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:06,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1844809272, now seen corresponding path program 1 times [2023-12-16 13:32:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:06,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836094984] [2023-12-16 13:32:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:06,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:06,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:06,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 13:32:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:06,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 13:32:06,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:07,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:07,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836094984] [2023-12-16 13:32:07,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836094984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:07,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:32:07,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 13:32:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622002928] [2023-12-16 13:32:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 13:32:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 13:32:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:32:07,960 INFO L87 Difference]: Start difference. First operand 79 states and 126 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:09,207 INFO L93 Difference]: Finished difference Result 259 states and 414 transitions. [2023-12-16 13:32:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 13:32:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 189 [2023-12-16 13:32:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:09,210 INFO L225 Difference]: With dead ends: 259 [2023-12-16 13:32:09,210 INFO L226 Difference]: Without dead ends: 181 [2023-12-16 13:32:09,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 13:32:09,212 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 194 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:09,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 414 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 13:32:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-16 13:32:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 154. [2023-12-16 13:32:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 89 states have internal predecessors, (123), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 13:32:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 247 transitions. [2023-12-16 13:32:09,235 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 247 transitions. Word has length 189 [2023-12-16 13:32:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:09,236 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 247 transitions. [2023-12-16 13:32:09,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:09,236 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 247 transitions. [2023-12-16 13:32:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-16 13:32:09,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:09,239 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:09,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 13:32:09,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:09,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:09,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash 823740918, now seen corresponding path program 1 times [2023-12-16 13:32:09,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:09,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675034381] [2023-12-16 13:32:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:09,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:09,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:09,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:09,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 13:32:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:09,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 13:32:09,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:10,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:10,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:10,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675034381] [2023-12-16 13:32:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675034381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:10,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:32:10,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 13:32:10,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920608091] [2023-12-16 13:32:10,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:10,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 13:32:10,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 13:32:10,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 13:32:10,480 INFO L87 Difference]: Start difference. First operand 154 states and 247 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:12,388 INFO L93 Difference]: Finished difference Result 311 states and 497 transitions. [2023-12-16 13:32:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 13:32:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 189 [2023-12-16 13:32:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:12,399 INFO L225 Difference]: With dead ends: 311 [2023-12-16 13:32:12,400 INFO L226 Difference]: Without dead ends: 158 [2023-12-16 13:32:12,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:32:12,401 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 71 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:12,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 349 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 13:32:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-16 13:32:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2023-12-16 13:32:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 68 states have internal predecessors, (86), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 13:32:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 210 transitions. [2023-12-16 13:32:12,417 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 210 transitions. Word has length 189 [2023-12-16 13:32:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:12,418 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 210 transitions. [2023-12-16 13:32:12,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 210 transitions. [2023-12-16 13:32:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-16 13:32:12,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:12,420 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:12,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 13:32:12,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:12,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:12,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1281641514, now seen corresponding path program 1 times [2023-12-16 13:32:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225912621] [2023-12-16 13:32:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:12,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:12,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:12,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 13:32:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:12,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 13:32:12,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:13,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:13,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225912621] [2023-12-16 13:32:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225912621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:13,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:32:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 13:32:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640586933] [2023-12-16 13:32:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 13:32:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 13:32:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:32:13,026 INFO L87 Difference]: Start difference. First operand 133 states and 210 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:14,737 INFO L93 Difference]: Finished difference Result 236 states and 375 transitions. [2023-12-16 13:32:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 13:32:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 190 [2023-12-16 13:32:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:14,739 INFO L225 Difference]: With dead ends: 236 [2023-12-16 13:32:14,739 INFO L226 Difference]: Without dead ends: 158 [2023-12-16 13:32:14,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 13:32:14,743 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 89 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:14,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 472 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 13:32:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-16 13:32:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 136. [2023-12-16 13:32:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 13:32:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 214 transitions. [2023-12-16 13:32:14,760 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 214 transitions. Word has length 190 [2023-12-16 13:32:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:14,760 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 214 transitions. [2023-12-16 13:32:14,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 214 transitions. [2023-12-16 13:32:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 13:32:14,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:14,781 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:14,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 13:32:14,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:14,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:14,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1997430435, now seen corresponding path program 1 times [2023-12-16 13:32:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505821601] [2023-12-16 13:32:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:14,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:14,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:15,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:15,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 13:32:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:15,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 13:32:15,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:15,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:15,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:15,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505821601] [2023-12-16 13:32:15,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505821601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:15,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:32:15,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 13:32:15,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548134095] [2023-12-16 13:32:15,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:15,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 13:32:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 13:32:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 13:32:15,455 INFO L87 Difference]: Start difference. First operand 136 states and 214 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:16,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:16,810 INFO L93 Difference]: Finished difference Result 321 states and 507 transitions. [2023-12-16 13:32:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 13:32:16,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2023-12-16 13:32:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:16,812 INFO L225 Difference]: With dead ends: 321 [2023-12-16 13:32:16,812 INFO L226 Difference]: Without dead ends: 243 [2023-12-16 13:32:16,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 13:32:16,813 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 162 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:16,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 412 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 13:32:16,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-16 13:32:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215. [2023-12-16 13:32:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 118 states have (on average 1.3220338983050848) internal successors, (156), 118 states have internal predecessors, (156), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 13:32:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 342 transitions. [2023-12-16 13:32:16,845 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 342 transitions. Word has length 191 [2023-12-16 13:32:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:16,848 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 342 transitions. [2023-12-16 13:32:16,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 342 transitions. [2023-12-16 13:32:16,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 13:32:16,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:16,851 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:16,860 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 [2023-12-16 13:32:17,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 13:32:17,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:17,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1505668910, now seen corresponding path program 1 times [2023-12-16 13:32:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:17,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129460766] [2023-12-16 13:32:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:17,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:17,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:17,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:17,065 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 (7)] Waiting until timeout for monitored process [2023-12-16 13:32:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:17,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 13:32:17,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 148 proven. 87 refuted. 0 times theorem prover too weak. 1625 trivial. 0 not checked. [2023-12-16 13:32:17,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:32:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:17,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:17,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129460766] [2023-12-16 13:32:17,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129460766] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 13:32:17,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 13:32:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-16 13:32:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227871842] [2023-12-16 13:32:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:17,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 13:32:17,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 13:32:17,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 13:32:17,623 INFO L87 Difference]: Start difference. First operand 215 states and 342 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:18,942 INFO L93 Difference]: Finished difference Result 410 states and 654 transitions. [2023-12-16 13:32:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 13:32:18,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-16 13:32:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:18,945 INFO L225 Difference]: With dead ends: 410 [2023-12-16 13:32:18,945 INFO L226 Difference]: Without dead ends: 253 [2023-12-16 13:32:18,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 13:32:18,950 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 41 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:18,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 332 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 13:32:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-16 13:32:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 231. [2023-12-16 13:32:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 134 states have (on average 1.328358208955224) internal successors, (178), 134 states have internal predecessors, (178), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 13:32:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 364 transitions. [2023-12-16 13:32:18,989 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 364 transitions. Word has length 192 [2023-12-16 13:32:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:18,989 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 364 transitions. [2023-12-16 13:32:18,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 364 transitions. [2023-12-16 13:32:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 13:32:18,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:18,991 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:19,001 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 13:32:19,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:19,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:19,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:19,202 INFO L85 PathProgramCache]: Analyzing trace with hash -804604332, now seen corresponding path program 1 times [2023-12-16 13:32:19,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:19,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069454644] [2023-12-16 13:32:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:19,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:19,205 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) [2023-12-16 13:32:19,205 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 [2023-12-16 13:32:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:19,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 13:32:19,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 839 proven. 48 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2023-12-16 13:32:20,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:32:21,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069454644] [2023-12-16 13:32:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069454644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 13:32:21,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523756155] [2023-12-16 13:32:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:21,009 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 13:32:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 13:32:21,045 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) [2023-12-16 13:32:21,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 13:32:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:21,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 13:32:21,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:22,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:22,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1523756155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:22,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 13:32:22,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2023-12-16 13:32:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426838099] [2023-12-16 13:32:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:22,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 13:32:22,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 13:32:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-16 13:32:22,118 INFO L87 Difference]: Start difference. First operand 231 states and 364 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:22,995 INFO L93 Difference]: Finished difference Result 496 states and 783 transitions. [2023-12-16 13:32:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 13:32:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-16 13:32:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:22,997 INFO L225 Difference]: With dead ends: 496 [2023-12-16 13:32:22,997 INFO L226 Difference]: Without dead ends: 323 [2023-12-16 13:32:22,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-12-16 13:32:22,998 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 36 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:22,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 279 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 13:32:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-16 13:32:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 312. [2023-12-16 13:32:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 183 states have (on average 1.3442622950819672) internal successors, (246), 183 states have internal predecessors, (246), 124 states have call successors, (124), 4 states have call predecessors, (124), 4 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-16 13:32:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 494 transitions. [2023-12-16 13:32:23,017 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 494 transitions. Word has length 192 [2023-12-16 13:32:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:23,018 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 494 transitions. [2023-12-16 13:32:23,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 494 transitions. [2023-12-16 13:32:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 13:32:23,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:23,019 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:23,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 13:32:23,232 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 [2023-12-16 13:32:23,430 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 [2023-12-16 13:32:23,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:23,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash -747346030, now seen corresponding path program 1 times [2023-12-16 13:32:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125538507] [2023-12-16 13:32:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:23,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:23,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:23,435 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) [2023-12-16 13:32:23,437 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 [2023-12-16 13:32:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:23,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 13:32:23,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 839 proven. 48 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2023-12-16 13:32:24,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:32:24,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125538507] [2023-12-16 13:32:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125538507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 13:32:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [657173217] [2023-12-16 13:32:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:24,931 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 13:32:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 13:32:24,932 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 13:32:24,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-16 13:32:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:25,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 13:32:25,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 828 proven. 27 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2023-12-16 13:32:26,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:32:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [657173217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 13:32:26,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 13:32:26,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 13 [2023-12-16 13:32:26,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974362946] [2023-12-16 13:32:26,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 13:32:26,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 13:32:26,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 13:32:26,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-12-16 13:32:26,274 INFO L87 Difference]: Start difference. First operand 312 states and 494 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-16 13:32:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:27,926 INFO L93 Difference]: Finished difference Result 605 states and 952 transitions. [2023-12-16 13:32:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 13:32:27,928 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 192 [2023-12-16 13:32:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:27,930 INFO L225 Difference]: With dead ends: 605 [2023-12-16 13:32:27,930 INFO L226 Difference]: Without dead ends: 351 [2023-12-16 13:32:27,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 502 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 13:32:27,932 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 164 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:27,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 847 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 13:32:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-16 13:32:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 328. [2023-12-16 13:32:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 197 states have (on average 1.350253807106599) internal successors, (266), 197 states have internal predecessors, (266), 124 states have call successors, (124), 6 states have call predecessors, (124), 6 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-16 13:32:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 514 transitions. [2023-12-16 13:32:27,959 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 514 transitions. Word has length 192 [2023-12-16 13:32:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:27,959 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 514 transitions. [2023-12-16 13:32:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-16 13:32:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 514 transitions. [2023-12-16 13:32:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 13:32:27,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:27,962 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:27,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-16 13:32:28,174 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 [2023-12-16 13:32:28,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 13:32:28,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:28,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1694017921, now seen corresponding path program 1 times [2023-12-16 13:32:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:28,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929418897] [2023-12-16 13:32:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:28,378 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) [2023-12-16 13:32:28,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 13:32:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:28,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 13:32:28,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 13:32:28,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 13:32:28,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:28,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929418897] [2023-12-16 13:32:28,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929418897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 13:32:28,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 13:32:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 13:32:28,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612507134] [2023-12-16 13:32:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 13:32:28,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 13:32:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 13:32:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:32:28,562 INFO L87 Difference]: Start difference. First operand 328 states and 514 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:32:29,829 INFO L93 Difference]: Finished difference Result 633 states and 998 transitions. [2023-12-16 13:32:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 13:32:29,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-16 13:32:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:32:29,842 INFO L225 Difference]: With dead ends: 633 [2023-12-16 13:32:29,843 INFO L226 Difference]: Without dead ends: 376 [2023-12-16 13:32:29,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 13:32:29,845 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 13:32:29,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 13:32:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-16 13:32:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2023-12-16 13:32:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 231 states have (on average 1.3593073593073592) internal successors, (314), 231 states have internal predecessors, (314), 124 states have call successors, (124), 6 states have call predecessors, (124), 6 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-16 13:32:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 562 transitions. [2023-12-16 13:32:29,870 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 562 transitions. Word has length 192 [2023-12-16 13:32:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:32:29,871 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 562 transitions. [2023-12-16 13:32:29,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 13:32:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 562 transitions. [2023-12-16 13:32:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 13:32:29,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:32:29,873 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:32:29,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-16 13:32:30,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 13:32:30,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:32:30,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:32:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash 884671295, now seen corresponding path program 1 times [2023-12-16 13:32:30,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:32:30,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737226939] [2023-12-16 13:32:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:32:30,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:32:30,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:32:30,093 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 13:32:30,121 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 (13)] Waiting until timeout for monitored process [2023-12-16 13:32:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:32:30,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 13:32:30,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:32:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 918 proven. 54 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2023-12-16 13:32:33,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:32:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-16 13:32:42,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:32:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737226939] [2023-12-16 13:32:42,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737226939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 13:32:42,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 13:32:42,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 13:32:42,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095661455] [2023-12-16 13:32:42,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 13:32:42,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 13:32:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:32:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 13:32:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 13:32:42,900 INFO L87 Difference]: Start difference. First operand 362 states and 562 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-16 13:33:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:33:05,811 INFO L93 Difference]: Finished difference Result 489 states and 741 transitions. [2023-12-16 13:33:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 13:33:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 192 [2023-12-16 13:33:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:33:05,824 INFO L225 Difference]: With dead ends: 489 [2023-12-16 13:33:05,824 INFO L226 Difference]: Without dead ends: 386 [2023-12-16 13:33:05,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2023-12-16 13:33:05,825 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 182 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-16 13:33:05,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 327 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-16 13:33:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-16 13:33:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2023-12-16 13:33:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 181 states have (on average 1.270718232044199) internal successors, (230), 181 states have internal predecessors, (230), 93 states have call successors, (93), 8 states have call predecessors, (93), 8 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 13:33:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 416 transitions. [2023-12-16 13:33:05,847 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 416 transitions. Word has length 192 [2023-12-16 13:33:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:33:05,847 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 416 transitions. [2023-12-16 13:33:05,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-16 13:33:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 416 transitions. [2023-12-16 13:33:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 13:33:05,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:33:05,849 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:33:05,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-16 13:33:06,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:33:06,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:33:06,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:33:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash -361136287, now seen corresponding path program 1 times [2023-12-16 13:33:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:33:06,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986011220] [2023-12-16 13:33:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:33:06,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:33:06,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:33:06,067 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) [2023-12-16 13:33:06,068 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 [2023-12-16 13:33:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:33:06,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 13:33:06,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:33:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 839 proven. 48 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2023-12-16 13:33:07,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:33:07,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 13:33:07,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986011220] [2023-12-16 13:33:07,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986011220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 13:33:07,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [612675179] [2023-12-16 13:33:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:33:07,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 13:33:07,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 13:33:07,875 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) [2023-12-16 13:33:07,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-16 13:33:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:33:08,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 13:33:08,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 13:33:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 828 proven. 27 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2023-12-16 13:33:09,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 13:33:09,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [612675179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 13:33:09,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 13:33:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2023-12-16 13:33:09,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524854063] [2023-12-16 13:33:09,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 13:33:09,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 13:33:09,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 13:33:09,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 13:33:09,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-12-16 13:33:09,464 INFO L87 Difference]: Start difference. First operand 283 states and 416 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-16 13:33:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 13:33:12,859 INFO L93 Difference]: Finished difference Result 421 states and 620 transitions. [2023-12-16 13:33:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 13:33:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 193 [2023-12-16 13:33:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 13:33:12,862 INFO L225 Difference]: With dead ends: 421 [2023-12-16 13:33:12,862 INFO L226 Difference]: Without dead ends: 227 [2023-12-16 13:33:12,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 503 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=362, Invalid=1120, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 13:33:12,863 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 188 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 13:33:12,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 925 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 13:33:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-16 13:33:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 188. [2023-12-16 13:33:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 119 states have internal predecessors, (148), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 13:33:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 272 transitions. [2023-12-16 13:33:12,878 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 272 transitions. Word has length 193 [2023-12-16 13:33:12,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 13:33:12,879 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 272 transitions. [2023-12-16 13:33:12,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-16 13:33:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 272 transitions. [2023-12-16 13:33:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 13:33:12,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 13:33:12,880 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:33:12,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-16 13:33:13,091 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 [2023-12-16 13:33:13,291 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 [2023-12-16 13:33:13,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 13:33:13,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 13:33:13,291 INFO L85 PathProgramCache]: Analyzing trace with hash -792425176, now seen corresponding path program 1 times [2023-12-16 13:33:13,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 13:33:13,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353090925] [2023-12-16 13:33:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 13:33:13,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:33:13,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 13:33:13,293 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) [2023-12-16 13:33:13,294 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 [2023-12-16 13:33:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 13:33:13,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 13:33:13,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 13:33:17,958 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 [2023-12-16 13:33:17,958 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 13:33:17,965 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 13:33:17,973 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 [2023-12-16 13:33:18,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 13:33:18,166 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 194 with TraceHistMax 31,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-9-2-1 context. [2023-12-16 13:33:18,169 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 13:33:18,171 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 13:33:18,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:33:18 BoogieIcfgContainer [2023-12-16 13:33:18,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 13:33:18,173 INFO L158 Benchmark]: Toolchain (without parser) took 74612.34ms. Allocated memory was 386.9MB in the beginning and 529.5MB in the end (delta: 142.6MB). Free memory was 326.8MB in the beginning and 391.7MB in the end (delta: -64.9MB). Peak memory consumption was 78.5MB. Max. memory is 8.0GB. [2023-12-16 13:33:18,173 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 13:33:18,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.70ms. Allocated memory is still 386.9MB. Free memory was 326.5MB in the beginning and 308.6MB in the end (delta: 17.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 13:33:18,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.77ms. Allocated memory is still 386.9MB. Free memory was 308.6MB in the beginning and 305.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 13:33:18,173 INFO L158 Benchmark]: Boogie Preprocessor took 67.29ms. Allocated memory is still 386.9MB. Free memory was 305.5MB in the beginning and 300.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 13:33:18,174 INFO L158 Benchmark]: RCFGBuilder took 1414.67ms. Allocated memory is still 386.9MB. Free memory was 300.6MB in the beginning and 322.4MB in the end (delta: -21.8MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2023-12-16 13:33:18,174 INFO L158 Benchmark]: TraceAbstraction took 72750.17ms. Allocated memory was 386.9MB in the beginning and 529.5MB in the end (delta: 142.6MB). Free memory was 321.8MB in the beginning and 391.7MB in the end (delta: -69.9MB). Peak memory consumption was 72.7MB. Max. memory is 8.0GB. [2023-12-16 13:33:18,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.70ms. Allocated memory is still 386.9MB. Free memory was 326.5MB in the beginning and 308.6MB in the end (delta: 17.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.77ms. Allocated memory is still 386.9MB. Free memory was 308.6MB in the beginning and 305.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.29ms. Allocated memory is still 386.9MB. Free memory was 305.5MB in the beginning and 300.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1414.67ms. Allocated memory is still 386.9MB. Free memory was 300.6MB in the beginning and 322.4MB in the end (delta: -21.8MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * TraceAbstraction took 72750.17ms. Allocated memory was 386.9MB in the beginning and 529.5MB in the end (delta: 142.6MB). Free memory was 321.8MB in the beginning and 391.7MB in the end (delta: -69.9MB). Peak memory consumption was 72.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 194 with TraceHistMax 31,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-9-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.7s, OverallIterations: 12, TraceHistogramMax: 31, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1151 SdHoareTripleChecker+Valid, 28.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1149 mSDsluCounter, 4716 SdHoareTripleChecker+Invalid, 27.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3395 mSDsCounter, 631 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2149 IncrementalHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 631 mSolverCounterUnsat, 1321 mSDtfsCounter, 2149 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3449 GetRequests, 3311 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=9, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 314 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 22.7s InterpolantComputationTime, 2678 NumberOfCodeBlocks, 2678 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3046 ConstructedInterpolants, 0 QuantifiedInterpolants, 18273 SizeOfPredicates, 69 NumberOfNonLiveVariables, 4656 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 29367/29760 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