/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/array-examples/standard_allDiff2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:44:08,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:44:08,403 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 06:44:08,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:44:08,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:44:08,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:44:08,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:44:08,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:44:08,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:44:08,435 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:44:08,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:44:08,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:44:08,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:44:08,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:44:08,437 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:44:08,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:44:08,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:44:08,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:44:08,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:44:08,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:44:08,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:44:08,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:44:08,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:44:08,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 06:44:08,446 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 06:44:08,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:44:08,446 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 06:44:08,447 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:44:08,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:44:08,447 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:44:08,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:44:08,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:44:08,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:44:08,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:44:08,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:44:08,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:44:08,449 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:44:08,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:44:08,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:44:08,450 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 06:44:08,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 06:44:08,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:44:08,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:44:08,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:44:08,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:44:08,634 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:44:08,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i [2023-12-16 06:44:09,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:44:09,960 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:44:09,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i [2023-12-16 06:44:09,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d404a30/a99057d78ba14167b9fa1db16b3bec65/FLAG84a40b54d [2023-12-16 06:44:09,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d404a30/a99057d78ba14167b9fa1db16b3bec65 [2023-12-16 06:44:09,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:44:09,986 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:44:09,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:44:09,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:44:10,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:44:10,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:44:09" (1/1) ... [2023-12-16 06:44:10,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32496543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10, skipping insertion in model container [2023-12-16 06:44:10,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:44:09" (1/1) ... [2023-12-16 06:44:10,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:44:10,309 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i[817,830] [2023-12-16 06:44:10,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:44:10,343 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:44:10,361 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i[817,830] [2023-12-16 06:44:10,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:44:10,411 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:44:10,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10 WrapperNode [2023-12-16 06:44:10,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:44:10,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:44:10,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:44:10,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:44:10,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,461 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-12-16 06:44:10,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:44:10,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:44:10,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:44:10,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:44:10,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,517 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-16 06:44:10,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:44:10,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:44:10,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:44:10,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:44:10,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (1/1) ... [2023-12-16 06:44:10,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:44:10,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:44:10,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:44:10,666 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 06:44:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:44:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 06:44:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 06:44:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:44:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 06:44:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 06:44:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:44:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:44:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:44:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 06:44:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 06:44:10,811 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:44:10,813 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:44:11,079 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:44:11,127 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:44:11,127 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-16 06:44:11,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:44:11 BoogieIcfgContainer [2023-12-16 06:44:11,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:44:11,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:44:11,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:44:11,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:44:11,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:44:09" (1/3) ... [2023-12-16 06:44:11,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ed00d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:44:11, skipping insertion in model container [2023-12-16 06:44:11,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:44:10" (2/3) ... [2023-12-16 06:44:11,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ed00d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:44:11, skipping insertion in model container [2023-12-16 06:44:11,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:44:11" (3/3) ... [2023-12-16 06:44:11,147 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2023-12-16 06:44:11,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:44:11,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:44:11,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:44:11,204 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;@2bed1124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:44:11,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:44:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 06:44:11,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:11,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:11,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:11,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 993314077, now seen corresponding path program 1 times [2023-12-16 06:44:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:11,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063672603] [2023-12-16 06:44:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:44:11,268 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 06:44:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:11,286 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 06:44:11,319 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 06:44:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:44:11,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:44:11,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:44:11,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:44:11,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063672603] [2023-12-16 06:44:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063672603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:44:11,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:44:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:44:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57040992] [2023-12-16 06:44:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:44:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:44:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:44:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:44:11,463 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:11,501 INFO L93 Difference]: Finished difference Result 39 states and 63 transitions. [2023-12-16 06:44:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:44:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 06:44:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:11,507 INFO L225 Difference]: With dead ends: 39 [2023-12-16 06:44:11,507 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 06:44:11,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 06:44:11,520 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:11,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:44:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 06:44:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-16 06:44:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2023-12-16 06:44:11,558 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2023-12-16 06:44:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:11,559 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-12-16 06:44:11,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:11,559 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-12-16 06:44:11,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 06:44:11,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:11,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:11,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 06:44:11,778 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 06:44:11,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:11,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash -876846921, now seen corresponding path program 1 times [2023-12-16 06:44:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:11,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274451044] [2023-12-16 06:44:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:44:11,780 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 06:44:11,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:11,781 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 06:44:11,833 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 06:44:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:44:11,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:44:11,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:44:11,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:44:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:44:11,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274451044] [2023-12-16 06:44:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274451044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:44:11,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:44:11,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 06:44:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767847659] [2023-12-16 06:44:11,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:44:11,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:44:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:44:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:44:11,919 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:12,019 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2023-12-16 06:44:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:44:12,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-16 06:44:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:12,022 INFO L225 Difference]: With dead ends: 74 [2023-12-16 06:44:12,022 INFO L226 Difference]: Without dead ends: 59 [2023-12-16 06:44:12,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:44:12,024 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:12,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 63 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:44:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-16 06:44:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 21. [2023-12-16 06:44:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-16 06:44:12,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 11 [2023-12-16 06:44:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:12,035 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-16 06:44:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-16 06:44:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 06:44:12,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:12,035 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:12,115 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 06:44:12,237 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 06:44:12,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:12,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash -301212771, now seen corresponding path program 2 times [2023-12-16 06:44:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:12,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626074786] [2023-12-16 06:44:12,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:44:12,239 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 06:44:12,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:12,241 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 06:44:12,253 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 06:44:12,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:44:12,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:44:12,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:44:12,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:44:12,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:44:12,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626074786] [2023-12-16 06:44:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626074786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:44:12,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:44:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:44:12,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022535808] [2023-12-16 06:44:12,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:44:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:44:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:44:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:44:12,333 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:12,368 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-12-16 06:44:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:44:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 06:44:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:12,370 INFO L225 Difference]: With dead ends: 35 [2023-12-16 06:44:12,370 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 06:44:12,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:44:12,374 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:12,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:44:12,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 06:44:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2023-12-16 06:44:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-12-16 06:44:12,378 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 14 [2023-12-16 06:44:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:12,378 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-12-16 06:44:12,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-12-16 06:44:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 06:44:12,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:12,379 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:12,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 06:44:12,581 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 06:44:12,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:12,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1558961252, now seen corresponding path program 1 times [2023-12-16 06:44:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:12,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499027261] [2023-12-16 06:44:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:44:12,583 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 06:44:12,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:12,584 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 06:44:12,588 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 06:44:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:44:12,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:44:12,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:44:12,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:44:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:44:12,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499027261] [2023-12-16 06:44:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499027261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:44:12,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:44:12,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 06:44:12,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768799452] [2023-12-16 06:44:12,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:44:12,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:44:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:44:12,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:44:12,761 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:13,081 INFO L93 Difference]: Finished difference Result 156 states and 203 transitions. [2023-12-16 06:44:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:44:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-16 06:44:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:13,083 INFO L225 Difference]: With dead ends: 156 [2023-12-16 06:44:13,083 INFO L226 Difference]: Without dead ends: 140 [2023-12-16 06:44:13,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:44:13,084 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 387 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:13,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 278 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:44:13,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-16 06:44:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 28. [2023-12-16 06:44:13,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-12-16 06:44:13,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2023-12-16 06:44:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:13,091 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-12-16 06:44:13,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-16 06:44:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 06:44:13,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:13,092 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:13,097 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 06:44:13,295 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 06:44:13,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:13,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:13,296 INFO L85 PathProgramCache]: Analyzing trace with hash 126253732, now seen corresponding path program 2 times [2023-12-16 06:44:13,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:13,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482271966] [2023-12-16 06:44:13,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:44:13,297 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 06:44:13,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:13,301 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 06:44:13,340 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 06:44:13,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:44:13,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:44:13,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:44:13,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:44:13,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:44:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 06:44:13,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482271966] [2023-12-16 06:44:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482271966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:44:13,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:44:13,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 06:44:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82199898] [2023-12-16 06:44:13,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:44:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:44:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:44:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:44:13,850 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:15,407 INFO L93 Difference]: Finished difference Result 336 states and 437 transitions. [2023-12-16 06:44:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:44:15,408 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-16 06:44:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:15,409 INFO L225 Difference]: With dead ends: 336 [2023-12-16 06:44:15,409 INFO L226 Difference]: Without dead ends: 320 [2023-12-16 06:44:15,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:44:15,410 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1692 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:15,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 1472 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 06:44:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-16 06:44:15,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 40. [2023-12-16 06:44:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-12-16 06:44:15,431 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 23 [2023-12-16 06:44:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:15,432 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-12-16 06:44:15,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-12-16 06:44:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 06:44:15,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:15,432 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:15,437 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 06:44:15,633 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 06:44:15,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:15,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:15,634 INFO L85 PathProgramCache]: Analyzing trace with hash 991995684, now seen corresponding path program 3 times [2023-12-16 06:44:15,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:15,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354458300] [2023-12-16 06:44:15,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:44:15,634 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 06:44:15,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:15,635 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 06:44:15,642 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 06:44:15,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 06:44:15,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:44:15,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 06:44:15,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 06:44:15,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:44:15,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354458300] [2023-12-16 06:44:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354458300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:44:15,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:44:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:44:15,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697199640] [2023-12-16 06:44:15,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:44:15,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:44:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:44:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:44:15,747 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:15,794 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-12-16 06:44:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:44:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-16 06:44:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:15,795 INFO L225 Difference]: With dead ends: 61 [2023-12-16 06:44:15,795 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 06:44:15,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:44:15,796 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:15,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:44:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 06:44:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2023-12-16 06:44:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-12-16 06:44:15,805 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 35 [2023-12-16 06:44:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:15,805 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-12-16 06:44:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-12-16 06:44:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 06:44:15,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:15,806 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:15,825 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 06:44:16,008 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 06:44:16,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:16,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash 476570884, now seen corresponding path program 1 times [2023-12-16 06:44:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015132830] [2023-12-16 06:44:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:44:16,009 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 06:44:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:16,024 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 06:44:16,052 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 06:44:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:44:16,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:44:16,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:44:16,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:44:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:44:17,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:17,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015132830] [2023-12-16 06:44:17,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015132830] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:44:17,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:44:17,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-16 06:44:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027696603] [2023-12-16 06:44:17,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:44:17,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:44:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:44:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:44:17,543 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:44:25,803 INFO L93 Difference]: Finished difference Result 698 states and 907 transitions. [2023-12-16 06:44:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 06:44:25,804 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-16 06:44:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:44:25,806 INFO L225 Difference]: With dead ends: 698 [2023-12-16 06:44:25,806 INFO L226 Difference]: Without dead ends: 681 [2023-12-16 06:44:25,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 06:44:25,808 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 8279 mSDsluCounter, 6389 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8279 SdHoareTripleChecker+Valid, 6668 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 06:44:25,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8279 Valid, 6668 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 06:44:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2023-12-16 06:44:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 65. [2023-12-16 06:44:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2023-12-16 06:44:25,877 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 38 [2023-12-16 06:44:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:44:25,878 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2023-12-16 06:44:25,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:44:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2023-12-16 06:44:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:44:25,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:44:25,881 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:44:25,886 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 06:44:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 06:44:26,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:44:26,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:44:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1903350780, now seen corresponding path program 2 times [2023-12-16 06:44:26,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:44:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032995649] [2023-12-16 06:44:26,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:44:26,090 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 06:44:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:44:26,104 INFO L229 MonitoredProcess]: Starting monitored process 9 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 06:44:26,158 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 (9)] Waiting until timeout for monitored process [2023-12-16 06:44:26,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:44:26,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:44:26,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 06:44:26,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:44:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:44:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:44:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:44:32,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:44:32,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032995649] [2023-12-16 06:44:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032995649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:44:32,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:44:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-16 06:44:32,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770430039] [2023-12-16 06:44:32,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:44:32,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 06:44:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:44:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 06:44:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 06:44:32,126 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:26,406 INFO L93 Difference]: Finished difference Result 1418 states and 1843 transitions. [2023-12-16 06:45:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-16 06:45:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:45:26,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:26,425 INFO L225 Difference]: With dead ends: 1418 [2023-12-16 06:45:26,425 INFO L226 Difference]: Without dead ends: 1401 [2023-12-16 06:45:26,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-16 06:45:26,489 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 35566 mSDsluCounter, 27701 mSDsCounter, 0 mSdLazyCounter, 13347 mSolverCounterSat, 2109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35566 SdHoareTripleChecker+Valid, 28292 SdHoareTripleChecker+Invalid, 15456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2109 IncrementalHoareTripleChecker+Valid, 13347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:26,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35566 Valid, 28292 Invalid, 15456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2109 Valid, 13347 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-16 06:45:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-16 06:45:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 113. [2023-12-16 06:45:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0535714285714286) internal successors, (118), 112 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2023-12-16 06:45:26,550 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 62 [2023-12-16 06:45:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:26,551 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2023-12-16 06:45:26,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2023-12-16 06:45:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:45:26,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:26,557 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:26,578 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:26,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 06:45:26,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:26,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1692973572, now seen corresponding path program 3 times [2023-12-16 06:45:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:26,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953358593] [2023-12-16 06:45:26,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:45:26,763 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 06:45:26,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:26,780 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 06:45:26,842 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 06:45:26,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 06:45:26,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:26,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 06:45:26,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4466 trivial. 0 not checked. [2023-12-16 06:45:26,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:45:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4466 trivial. 0 not checked. [2023-12-16 06:45:27,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:45:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953358593] [2023-12-16 06:45:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953358593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:45:27,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:45:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 06:45:27,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106063383] [2023-12-16 06:45:27,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:45:27,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:45:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:45:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:45:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:45:27,017 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:45:27,147 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2023-12-16 06:45:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:45:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 06:45:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:45:27,148 INFO L225 Difference]: With dead ends: 141 [2023-12-16 06:45:27,148 INFO L226 Difference]: Without dead ends: 128 [2023-12-16 06:45:27,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:45:27,150 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:45:27,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 73 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:45:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-16 06:45:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-12-16 06:45:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.094488188976378) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2023-12-16 06:45:27,180 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 110 [2023-12-16 06:45:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:45:27,180 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2023-12-16 06:45:27,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:45:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2023-12-16 06:45:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-16 06:45:27,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:45:27,181 INFO L195 NwaCegarLoop]: trace histogram [94, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:45:27,186 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 06:45:27,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:27,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:45:27,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:45:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1653065533, now seen corresponding path program 4 times [2023-12-16 06:45:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:45:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156000621] [2023-12-16 06:45:27,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:45:27,385 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 06:45:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:45:27,386 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:45:27,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 06:45:27,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:45:27,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:45:27,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-16 06:45:27,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:45:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4491 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 06:45:30,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 06:45:31,472 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:45:31,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 06:45:31,490 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 06:45:31,498 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:45:31,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:45:31,676 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 120 with TraceHistMax 94,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 111 known predicates. [2023-12-16 06:45:31,680 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1] [2023-12-16 06:45:31,681 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:45:31,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:45:31 BoogieIcfgContainer [2023-12-16 06:45:31,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:45:31,683 INFO L158 Benchmark]: Toolchain (without parser) took 81697.42ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 182.5MB in the beginning and 114.4MB in the end (delta: 68.1MB). Peak memory consumption was 116.9MB. Max. memory is 8.0GB. [2023-12-16 06:45:31,683 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 186.6MB. Free memory was 134.7MB in the beginning and 134.6MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:45:31,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.56ms. Allocated memory is still 231.7MB. Free memory was 182.0MB in the beginning and 171.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 06:45:31,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.66ms. Allocated memory is still 231.7MB. Free memory was 170.5MB in the beginning and 169.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 06:45:31,684 INFO L158 Benchmark]: Boogie Preprocessor took 84.03ms. Allocated memory is still 231.7MB. Free memory was 169.3MB in the beginning and 166.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:45:31,695 INFO L158 Benchmark]: RCFGBuilder took 568.51ms. Allocated memory is still 231.7MB. Free memory was 166.8MB in the beginning and 152.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 06:45:31,696 INFO L158 Benchmark]: TraceAbstraction took 80543.69ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 151.6MB in the beginning and 114.4MB in the end (delta: 37.2MB). Peak memory consumption was 85.4MB. Max. memory is 8.0GB. [2023-12-16 06:45:31,696 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 186.6MB. Free memory was 134.7MB in the beginning and 134.6MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 424.56ms. Allocated memory is still 231.7MB. Free memory was 182.0MB in the beginning and 171.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.66ms. Allocated memory is still 231.7MB. Free memory was 170.5MB in the beginning and 169.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 84.03ms. Allocated memory is still 231.7MB. Free memory was 169.3MB in the beginning and 166.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 568.51ms. Allocated memory is still 231.7MB. Free memory was 166.8MB in the beginning and 152.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 80543.69ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 151.6MB in the beginning and 114.4MB in the end (delta: 37.2MB). Peak memory consumption was 85.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 120 with TraceHistMax 94,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 111 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 80.5s, OverallIterations: 10, TraceHistogramMax: 94, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 64.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46082 SdHoareTripleChecker+Valid, 12.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46082 mSDsluCounter, 36939 SdHoareTripleChecker+Invalid, 10.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35820 mSDsCounter, 2762 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17629 IncrementalHoareTripleChecker+Invalid, 20391 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2762 mSolverCounterUnsat, 1119 mSDtfsCounter, 17629 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 655 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 57.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=9, InterpolantAutomatonStates: 207, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 2344 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 320 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 566 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 3 NumberOfNonLiveVariables, 794 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 9208/12010 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