/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 10:45:23,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 10:45:23,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 10:45:23,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 10:45:23,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 10:45:23,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 10:45:23,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 10:45:23,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 10:45:23,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 10:45:23,953 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 10:45:23,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 10:45:23,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 10:45:23,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 10:45:23,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 10:45:23,955 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 10:45:23,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 10:45:23,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 10:45:23,956 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 10:45:23,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 10:45:23,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 10:45:23,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 10:45:23,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 10:45:23,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 10:45:23,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 10:45:23,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 10:45:23,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 10:45:23,959 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 10:45:23,960 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 10:45:24,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 10:45:24,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 10:45:24,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 10:45:24,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 10:45:24,174 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 10:45:24,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i [2023-12-24 10:45:25,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 10:45:25,452 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 10:45:25,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i [2023-12-24 10:45:25,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec94aba41/efc98c6f6acb46f5b3266e1c6d8df5da/FLAGf86a679c7 [2023-12-24 10:45:25,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec94aba41/efc98c6f6acb46f5b3266e1c6d8df5da [2023-12-24 10:45:25,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 10:45:25,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 10:45:25,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 10:45:25,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 10:45:25,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 10:45:25,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f41b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25, skipping insertion in model container [2023-12-24 10:45:25,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 10:45:25,578 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i[915,928] [2023-12-24 10:45:25,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 10:45:25,617 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 10:45:25,625 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-42.i[915,928] [2023-12-24 10:45:25,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 10:45:25,658 INFO L206 MainTranslator]: Completed translation [2023-12-24 10:45:25,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25 WrapperNode [2023-12-24 10:45:25,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 10:45:25,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 10:45:25,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 10:45:25,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 10:45:25,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,700 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2023-12-24 10:45:25,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 10:45:25,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 10:45:25,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 10:45:25,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 10:45:25,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,721 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 10:45:25,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 10:45:25,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 10:45:25,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 10:45:25,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 10:45:25,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (1/1) ... [2023-12-24 10:45:25,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 10:45:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 10:45:25,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 10:45:25,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 10:45:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 10:45:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 10:45:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 10:45:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 10:45:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 10:45:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 10:45:25,859 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 10:45:25,861 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 10:45:26,215 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 10:45:26,263 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 10:45:26,263 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 10:45:26,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:45:26 BoogieIcfgContainer [2023-12-24 10:45:26,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 10:45:26,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 10:45:26,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 10:45:26,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 10:45:26,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:45:25" (1/3) ... [2023-12-24 10:45:26,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6a69b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:45:26, skipping insertion in model container [2023-12-24 10:45:26,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:45:25" (2/3) ... [2023-12-24 10:45:26,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6a69b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:45:26, skipping insertion in model container [2023-12-24 10:45:26,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:45:26" (3/3) ... [2023-12-24 10:45:26,277 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-42.i [2023-12-24 10:45:26,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 10:45:26,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 10:45:26,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 10:45:26,327 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;@51beae69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 10:45:26,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 10:45:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 32 states have (on average 1.5) internal successors, (48), 33 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 10:45:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-24 10:45:26,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:26,345 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:26,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:26,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1441148856, now seen corresponding path program 1 times [2023-12-24 10:45:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360532725] [2023-12-24 10:45:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:26,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:26,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:26,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:45:26,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 10:45:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:26,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 10:45:26,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-24 10:45:26,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:45:26,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:26,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360532725] [2023-12-24 10:45:26,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360532725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:45:26,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 10:45:26,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 10:45:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096928117] [2023-12-24 10:45:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:45:26,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 10:45:26,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 10:45:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 10:45:26,678 INFO L87 Difference]: Start difference. First operand has 47 states, 32 states have (on average 1.5) internal successors, (48), 33 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 10:45:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:26,763 INFO L93 Difference]: Finished difference Result 91 states and 154 transitions. [2023-12-24 10:45:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 10:45:26,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2023-12-24 10:45:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:26,780 INFO L225 Difference]: With dead ends: 91 [2023-12-24 10:45:26,780 INFO L226 Difference]: Without dead ends: 45 [2023-12-24 10:45:26,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 10:45:26,786 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:26,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 10:45:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-24 10:45:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-24 10:45:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 10:45:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 67 transitions. [2023-12-24 10:45:26,824 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 67 transitions. Word has length 83 [2023-12-24 10:45:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:26,824 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 67 transitions. [2023-12-24 10:45:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 10:45:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 67 transitions. [2023-12-24 10:45:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-24 10:45:26,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:26,827 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:26,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 10:45:27,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:27,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:27,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:27,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2116648844, now seen corresponding path program 1 times [2023-12-24 10:45:27,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:27,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765333714] [2023-12-24 10:45:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:27,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:27,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:27,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:45:27,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 10:45:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:27,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 10:45:27,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 10:45:27,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:45:27,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:27,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765333714] [2023-12-24 10:45:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765333714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:45:27,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 10:45:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 10:45:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200152873] [2023-12-24 10:45:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:45:27,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 10:45:27,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:27,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 10:45:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 10:45:27,318 INFO L87 Difference]: Start difference. First operand 45 states and 67 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:27,516 INFO L93 Difference]: Finished difference Result 134 states and 200 transitions. [2023-12-24 10:45:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 10:45:27,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2023-12-24 10:45:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:27,524 INFO L225 Difference]: With dead ends: 134 [2023-12-24 10:45:27,524 INFO L226 Difference]: Without dead ends: 90 [2023-12-24 10:45:27,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 10:45:27,525 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 63 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:27,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 186 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 10:45:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-24 10:45:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2023-12-24 10:45:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 10:45:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 103 transitions. [2023-12-24 10:45:27,540 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 103 transitions. Word has length 83 [2023-12-24 10:45:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:27,540 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 103 transitions. [2023-12-24 10:45:27,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 103 transitions. [2023-12-24 10:45:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 10:45:27,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:27,542 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:27,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 10:45:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:27,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:27,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2013944679, now seen corresponding path program 1 times [2023-12-24 10:45:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421349623] [2023-12-24 10:45:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:27,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:45:27,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 10:45:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:27,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 10:45:27,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 10:45:28,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:45:28,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421349623] [2023-12-24 10:45:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421349623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:45:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 10:45:28,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 10:45:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577388111] [2023-12-24 10:45:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:45:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 10:45:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 10:45:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 10:45:28,180 INFO L87 Difference]: Start difference. First operand 70 states and 103 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:28,547 INFO L93 Difference]: Finished difference Result 175 states and 259 transitions. [2023-12-24 10:45:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 10:45:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-12-24 10:45:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:28,555 INFO L225 Difference]: With dead ends: 175 [2023-12-24 10:45:28,555 INFO L226 Difference]: Without dead ends: 131 [2023-12-24 10:45:28,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 10:45:28,556 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 93 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:28,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 231 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 10:45:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-24 10:45:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2023-12-24 10:45:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 10:45:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 167 transitions. [2023-12-24 10:45:28,571 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 167 transitions. Word has length 84 [2023-12-24 10:45:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:28,572 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 167 transitions. [2023-12-24 10:45:28,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 167 transitions. [2023-12-24 10:45:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 10:45:28,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:28,573 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:28,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 10:45:28,784 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 [2023-12-24 10:45:28,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:28,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1002827429, now seen corresponding path program 1 times [2023-12-24 10:45:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:28,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18171197] [2023-12-24 10:45:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:28,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:28,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:28,790 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) [2023-12-24 10:45:28,791 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 [2023-12-24 10:45:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:28,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 10:45:28,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 10:45:28,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:45:28,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:28,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18171197] [2023-12-24 10:45:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18171197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:45:28,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 10:45:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 10:45:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463756917] [2023-12-24 10:45:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:45:28,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 10:45:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 10:45:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 10:45:28,934 INFO L87 Difference]: Start difference. First operand 112 states and 167 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:29,050 INFO L93 Difference]: Finished difference Result 198 states and 297 transitions. [2023-12-24 10:45:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 10:45:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-12-24 10:45:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:29,059 INFO L225 Difference]: With dead ends: 198 [2023-12-24 10:45:29,059 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 10:45:29,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 10:45:29,061 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:29,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 10:45:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 10:45:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-24 10:45:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 72 states have internal predecessors, (93), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 10:45:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 165 transitions. [2023-12-24 10:45:29,073 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 165 transitions. Word has length 84 [2023-12-24 10:45:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:29,073 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 165 transitions. [2023-12-24 10:45:29,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 165 transitions. [2023-12-24 10:45:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 10:45:29,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:29,074 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:29,084 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 [2023-12-24 10:45:29,280 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 [2023-12-24 10:45:29,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:29,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 193480803, now seen corresponding path program 1 times [2023-12-24 10:45:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:29,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58914219] [2023-12-24 10:45:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:29,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:29,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:29,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:45:29,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 10:45:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:29,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 10:45:29,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-24 10:45:29,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:45:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-24 10:45:29,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:29,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58914219] [2023-12-24 10:45:29,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58914219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 10:45:29,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 10:45:29,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-24 10:45:29,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681045566] [2023-12-24 10:45:29,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 10:45:29,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 10:45:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:29,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 10:45:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-24 10:45:29,746 INFO L87 Difference]: Start difference. First operand 112 states and 165 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 10:45:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:30,376 INFO L93 Difference]: Finished difference Result 265 states and 356 transitions. [2023-12-24 10:45:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 10:45:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2023-12-24 10:45:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:30,378 INFO L225 Difference]: With dead ends: 265 [2023-12-24 10:45:30,378 INFO L226 Difference]: Without dead ends: 221 [2023-12-24 10:45:30,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 10:45:30,380 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 194 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:30,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 225 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 10:45:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-24 10:45:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 195. [2023-12-24 10:45:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 134 states have internal predecessors, (168), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 10:45:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 264 transitions. [2023-12-24 10:45:30,397 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 264 transitions. Word has length 84 [2023-12-24 10:45:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:30,397 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 264 transitions. [2023-12-24 10:45:30,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 10:45:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 264 transitions. [2023-12-24 10:45:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 10:45:30,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:30,399 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:30,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 10:45:30,605 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 [2023-12-24 10:45:30,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:30,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash -393325211, now seen corresponding path program 1 times [2023-12-24 10:45:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453931124] [2023-12-24 10:45:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:30,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:30,607 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) [2023-12-24 10:45:30,609 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 [2023-12-24 10:45:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:30,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 10:45:30,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-24 10:45:31,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:45:31,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453931124] [2023-12-24 10:45:31,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453931124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:45:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1491811602] [2023-12-24 10:45:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:31,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:45:31,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:45:31,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:45:31,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 10:45:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:32,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 10:45:32,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 10:45:32,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:45:32,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1491811602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:45:32,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:45:32,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-24 10:45:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30988274] [2023-12-24 10:45:32,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:45:32,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 10:45:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:32,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 10:45:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:45:32,654 INFO L87 Difference]: Start difference. First operand 195 states and 264 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:35,082 INFO L93 Difference]: Finished difference Result 558 states and 751 transitions. [2023-12-24 10:45:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 10:45:35,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-12-24 10:45:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:35,094 INFO L225 Difference]: With dead ends: 558 [2023-12-24 10:45:35,094 INFO L226 Difference]: Without dead ends: 457 [2023-12-24 10:45:35,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-24 10:45:35,096 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 125 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:35,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 305 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 10:45:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-24 10:45:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 389. [2023-12-24 10:45:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 277 states have (on average 1.2671480144404332) internal successors, (351), 279 states have internal predecessors, (351), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 10:45:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 527 transitions. [2023-12-24 10:45:35,144 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 527 transitions. Word has length 84 [2023-12-24 10:45:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:35,145 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 527 transitions. [2023-12-24 10:45:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 527 transitions. [2023-12-24 10:45:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 10:45:35,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:35,152 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:35,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 10:45:35,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 10:45:35,552 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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:45:35,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:35,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash -135159773, now seen corresponding path program 1 times [2023-12-24 10:45:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:35,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968463692] [2023-12-24 10:45:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:35,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:35,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:35,556 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) [2023-12-24 10:45:35,559 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 [2023-12-24 10:45:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:35,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 10:45:35,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-24 10:45:36,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:45:36,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:45:36,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968463692] [2023-12-24 10:45:36,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968463692] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:45:36,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [637299337] [2023-12-24 10:45:36,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:36,738 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:45:36,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:45:36,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:45:36,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 10:45:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:37,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 10:45:37,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:45:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 10:45:37,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:45:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [637299337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:45:37,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:45:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-24 10:45:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147081902] [2023-12-24 10:45:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:45:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 10:45:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:45:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 10:45:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 10:45:37,934 INFO L87 Difference]: Start difference. First operand 389 states and 527 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:45:39,914 INFO L93 Difference]: Finished difference Result 682 states and 924 transitions. [2023-12-24 10:45:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 10:45:39,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 84 [2023-12-24 10:45:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:45:39,923 INFO L225 Difference]: With dead ends: 682 [2023-12-24 10:45:39,923 INFO L226 Difference]: Without dead ends: 527 [2023-12-24 10:45:39,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-24 10:45:39,924 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 76 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 10:45:39,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 245 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 10:45:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-24 10:45:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 488. [2023-12-24 10:45:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 346 states have (on average 1.260115606936416) internal successors, (436), 348 states have internal predecessors, (436), 112 states have call successors, (112), 29 states have call predecessors, (112), 29 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-24 10:45:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 660 transitions. [2023-12-24 10:45:39,963 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 660 transitions. Word has length 84 [2023-12-24 10:45:39,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:45:39,964 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 660 transitions. [2023-12-24 10:45:39,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 10:45:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 660 transitions. [2023-12-24 10:45:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-24 10:45:39,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:45:39,969 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:45:39,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 10:45:40,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-24 10:45:40,376 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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:45:40,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:45:40,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:45:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1882768435, now seen corresponding path program 1 times [2023-12-24 10:45:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:45:40,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841910269] [2023-12-24 10:45:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:45:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:45:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:45:40,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:45:40,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 10:45:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:45:40,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 10:45:40,506 INFO L285 TraceCheckSpWp]: Computing forward predicates...