/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/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 09:03:34,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 09:03:34,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 09:03:34,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 09:03:34,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 09:03:34,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 09:03:34,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 09:03:34,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 09:03:34,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 09:03:34,223 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 09:03:34,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 09:03:34,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 09:03:34,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 09:03:34,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 09:03:34,225 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 09:03:34,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 09:03:34,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 09:03:34,226 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 09:03:34,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 09:03:34,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 09:03:34,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 09:03:34,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 09:03:34,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 09:03:34,227 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 09:03:34,227 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 09:03:34,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 09:03:34,228 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 09:03:34,228 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 09:03:34,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 09:03:34,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 09:03:34,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 09:03:34,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 09:03:34,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:03:34,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 09:03:34,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 09:03:34,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 09:03:34,231 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 09:03:34,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 09:03:34,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 09:03:34,232 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 09:03:34,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 09:03:34,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 09:03:34,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 09:03:34,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 09:03:34,391 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 09:03:34,391 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 09:03:34,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-25 09:03:35,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 09:03:35,629 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 09:03:35,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-25 09:03:35,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11f435b5/1766c4e86fc04265924365da7f0be34b/FLAG62680f2b8 [2023-12-25 09:03:35,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11f435b5/1766c4e86fc04265924365da7f0be34b [2023-12-25 09:03:35,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 09:03:35,653 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 09:03:35,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 09:03:35,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 09:03:35,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 09:03:35,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:35,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9e7f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35, skipping insertion in model container [2023-12-25 09:03:35,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:35,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 09:03:35,862 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-25 09:03:35,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:03:35,911 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 09:03:35,944 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-25 09:03:35,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:03:35,974 INFO L206 MainTranslator]: Completed translation [2023-12-25 09:03:35,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35 WrapperNode [2023-12-25 09:03:35,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 09:03:35,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 09:03:35,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 09:03:35,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 09:03:35,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:35,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,026 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 606 [2023-12-25 09:03:36,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 09:03:36,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 09:03:36,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 09:03:36,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 09:03:36,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,061 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]. [2023-12-25 09:03:36,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 09:03:36,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 09:03:36,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 09:03:36,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 09:03:36,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (1/1) ... [2023-12-25 09:03:36,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:03:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 09:03:36,113 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) [2023-12-25 09:03:36,131 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 [2023-12-25 09:03:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 09:03:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 09:03:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 09:03:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 09:03:36,255 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 09:03:36,257 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 09:03:36,670 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 09:03:36,697 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 09:03:36,698 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 09:03:36,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:03:36 BoogieIcfgContainer [2023-12-25 09:03:36,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 09:03:36,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 09:03:36,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 09:03:36,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 09:03:36,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:03:35" (1/3) ... [2023-12-25 09:03:36,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb905df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:03:36, skipping insertion in model container [2023-12-25 09:03:36,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:03:35" (2/3) ... [2023-12-25 09:03:36,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb905df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:03:36, skipping insertion in model container [2023-12-25 09:03:36,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:03:36" (3/3) ... [2023-12-25 09:03:36,732 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-25 09:03:36,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 09:03:36,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 09:03:36,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 09:03:36,781 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;@78473e38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 09:03:36,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 09:03:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 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) [2023-12-25 09:03:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-25 09:03:36,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:36,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:36,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:36,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash -257930743, now seen corresponding path program 1 times [2023-12-25 09:03:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955719418] [2023-12-25 09:03:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:36,806 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 [2023-12-25 09:03:36,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:36,808 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) [2023-12-25 09:03:36,809 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 [2023-12-25 09:03:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:36,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:36,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:37,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:37,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:37,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955719418] [2023-12-25 09:03:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955719418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:37,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:37,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:37,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878455550] [2023-12-25 09:03:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:37,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:37,085 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-12-25 09:03:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:37,154 INFO L93 Difference]: Finished difference Result 284 states and 487 transitions. [2023-12-25 09:03:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:37,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-12-25 09:03:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:37,163 INFO L225 Difference]: With dead ends: 284 [2023-12-25 09:03:37,163 INFO L226 Difference]: Without dead ends: 200 [2023-12-25 09:03:37,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:37,167 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:37,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-25 09:03:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-12-25 09:03:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.583756345177665) internal successors, (312), 197 states have internal predecessors, (312), 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) [2023-12-25 09:03:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 312 transitions. [2023-12-25 09:03:37,201 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 312 transitions. Word has length 56 [2023-12-25 09:03:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:37,202 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 312 transitions. [2023-12-25 09:03:37,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-12-25 09:03:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 312 transitions. [2023-12-25 09:03:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 09:03:37,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:37,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:37,209 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 [2023-12-25 09:03:37,404 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 [2023-12-25 09:03:37,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:37,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:37,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1691975926, now seen corresponding path program 1 times [2023-12-25 09:03:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:37,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238788517] [2023-12-25 09:03:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:37,407 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 [2023-12-25 09:03:37,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:37,408 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) [2023-12-25 09:03:37,433 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 [2023-12-25 09:03:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:37,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:37,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:37,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:37,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238788517] [2023-12-25 09:03:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238788517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172091222] [2023-12-25 09:03:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:37,606 INFO L87 Difference]: Start difference. First operand 198 states and 312 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-12-25 09:03:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:37,664 INFO L93 Difference]: Finished difference Result 571 states and 897 transitions. [2023-12-25 09:03:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:37,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-12-25 09:03:37,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:37,669 INFO L225 Difference]: With dead ends: 571 [2023-12-25 09:03:37,670 INFO L226 Difference]: Without dead ends: 381 [2023-12-25 09:03:37,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:37,674 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 516 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:37,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 392 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-25 09:03:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2023-12-25 09:03:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.566137566137566) internal successors, (592), 378 states have internal predecessors, (592), 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) [2023-12-25 09:03:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 592 transitions. [2023-12-25 09:03:37,698 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 592 transitions. Word has length 58 [2023-12-25 09:03:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:37,698 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 592 transitions. [2023-12-25 09:03:37,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-12-25 09:03:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 592 transitions. [2023-12-25 09:03:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 09:03:37,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:37,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:37,709 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 [2023-12-25 09:03:37,901 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 [2023-12-25 09:03:37,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2010419473, now seen corresponding path program 1 times [2023-12-25 09:03:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434922578] [2023-12-25 09:03:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:37,903 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 [2023-12-25 09:03:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:37,904 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) [2023-12-25 09:03:37,933 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 [2023-12-25 09:03:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:37,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:37,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:37,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:37,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434922578] [2023-12-25 09:03:37,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434922578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:37,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:37,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272983874] [2023-12-25 09:03:37,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:37,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:37,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:37,999 INFO L87 Difference]: Start difference. First operand 379 states and 592 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-12-25 09:03:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:38,016 INFO L93 Difference]: Finished difference Result 647 states and 1047 transitions. [2023-12-25 09:03:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-12-25 09:03:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:38,018 INFO L225 Difference]: With dead ends: 647 [2023-12-25 09:03:38,018 INFO L226 Difference]: Without dead ends: 498 [2023-12-25 09:03:38,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:38,022 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:38,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 466 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-25 09:03:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2023-12-25 09:03:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.593939393939394) internal successors, (789), 495 states have internal predecessors, (789), 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) [2023-12-25 09:03:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 789 transitions. [2023-12-25 09:03:38,050 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 789 transitions. Word has length 58 [2023-12-25 09:03:38,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:38,050 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 789 transitions. [2023-12-25 09:03:38,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-12-25 09:03:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 789 transitions. [2023-12-25 09:03:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-25 09:03:38,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:38,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:38,059 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 [2023-12-25 09:03:38,255 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 [2023-12-25 09:03:38,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:38,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1639185350, now seen corresponding path program 1 times [2023-12-25 09:03:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:38,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858197011] [2023-12-25 09:03:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:38,256 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 [2023-12-25 09:03:38,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:38,257 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) [2023-12-25 09:03:38,281 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 [2023-12-25 09:03:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:38,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:38,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:38,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:38,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858197011] [2023-12-25 09:03:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858197011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:38,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:38,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873833704] [2023-12-25 09:03:38,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:38,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:38,331 INFO L87 Difference]: Start difference. First operand 496 states and 789 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-12-25 09:03:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:38,348 INFO L93 Difference]: Finished difference Result 1452 states and 2307 transitions. [2023-12-25 09:03:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2023-12-25 09:03:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:38,351 INFO L225 Difference]: With dead ends: 1452 [2023-12-25 09:03:38,352 INFO L226 Difference]: Without dead ends: 983 [2023-12-25 09:03:38,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:38,353 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 193 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:38,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 586 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-12-25 09:03:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 498. [2023-12-25 09:03:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.591549295774648) internal successors, (791), 497 states have internal predecessors, (791), 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) [2023-12-25 09:03:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 791 transitions. [2023-12-25 09:03:38,367 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 791 transitions. Word has length 59 [2023-12-25 09:03:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:38,368 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 791 transitions. [2023-12-25 09:03:38,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-12-25 09:03:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 791 transitions. [2023-12-25 09:03:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 09:03:38,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:38,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:38,374 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 [2023-12-25 09:03:38,574 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 [2023-12-25 09:03:38,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:38,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash 453669204, now seen corresponding path program 1 times [2023-12-25 09:03:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956571134] [2023-12-25 09:03:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:38,575 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 [2023-12-25 09:03:38,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:38,576 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) [2023-12-25 09:03:38,578 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 [2023-12-25 09:03:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:38,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:38,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:38,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:38,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:38,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956571134] [2023-12-25 09:03:38,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956571134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:38,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:38,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241235282] [2023-12-25 09:03:38,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:38,772 INFO L87 Difference]: Start difference. First operand 498 states and 791 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-25 09:03:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:38,811 INFO L93 Difference]: Finished difference Result 1448 states and 2301 transitions. [2023-12-25 09:03:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-12-25 09:03:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:38,815 INFO L225 Difference]: With dead ends: 1448 [2023-12-25 09:03:38,815 INFO L226 Difference]: Without dead ends: 961 [2023-12-25 09:03:38,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:38,816 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 414 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:38,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 484 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2023-12-25 09:03:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2023-12-25 09:03:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.5782881002087683) internal successors, (1512), 958 states have internal predecessors, (1512), 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) [2023-12-25 09:03:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1512 transitions. [2023-12-25 09:03:38,836 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1512 transitions. Word has length 60 [2023-12-25 09:03:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:38,836 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1512 transitions. [2023-12-25 09:03:38,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-25 09:03:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1512 transitions. [2023-12-25 09:03:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 09:03:38,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:38,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:38,854 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 (6)] Ended with exit code 0 [2023-12-25 09:03:39,045 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 [2023-12-25 09:03:39,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:39,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -893730667, now seen corresponding path program 1 times [2023-12-25 09:03:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259627381] [2023-12-25 09:03:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:39,047 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 [2023-12-25 09:03:39,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:39,048 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) [2023-12-25 09:03:39,049 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 [2023-12-25 09:03:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:39,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:39,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:39,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:39,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259627381] [2023-12-25 09:03:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259627381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:39,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:39,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281303639] [2023-12-25 09:03:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:39,153 INFO L87 Difference]: Start difference. First operand 959 states and 1512 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2023-12-25 09:03:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:39,175 INFO L93 Difference]: Finished difference Result 1675 states and 2635 transitions. [2023-12-25 09:03:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:39,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2023-12-25 09:03:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:39,178 INFO L225 Difference]: With dead ends: 1675 [2023-12-25 09:03:39,178 INFO L226 Difference]: Without dead ends: 731 [2023-12-25 09:03:39,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:39,180 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 69 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:39,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 639 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-25 09:03:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2023-12-25 09:03:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.5684931506849316) internal successors, (1145), 730 states have internal predecessors, (1145), 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) [2023-12-25 09:03:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1145 transitions. [2023-12-25 09:03:39,194 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1145 transitions. Word has length 60 [2023-12-25 09:03:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:39,194 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1145 transitions. [2023-12-25 09:03:39,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2023-12-25 09:03:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1145 transitions. [2023-12-25 09:03:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 09:03:39,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:39,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:39,201 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 [2023-12-25 09:03:39,397 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 [2023-12-25 09:03:39,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:39,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash 46189663, now seen corresponding path program 1 times [2023-12-25 09:03:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:39,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938816126] [2023-12-25 09:03:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:39,399 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 [2023-12-25 09:03:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:39,400 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) [2023-12-25 09:03:39,401 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 [2023-12-25 09:03:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:39,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:03:39,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:39,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:39,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938816126] [2023-12-25 09:03:39,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938816126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:39,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:39,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475604556] [2023-12-25 09:03:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:39,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:03:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:03:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:39,832 INFO L87 Difference]: Start difference. First operand 731 states and 1145 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-12-25 09:03:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:39,910 INFO L93 Difference]: Finished difference Result 1311 states and 2104 transitions. [2023-12-25 09:03:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:03:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2023-12-25 09:03:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:39,913 INFO L225 Difference]: With dead ends: 1311 [2023-12-25 09:03:39,913 INFO L226 Difference]: Without dead ends: 731 [2023-12-25 09:03:39,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:03:39,914 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 291 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:39,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 254 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:03:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-25 09:03:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2023-12-25 09:03:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.5575342465753426) internal successors, (1137), 730 states have internal predecessors, (1137), 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) [2023-12-25 09:03:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1137 transitions. [2023-12-25 09:03:39,929 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1137 transitions. Word has length 63 [2023-12-25 09:03:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:39,929 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1137 transitions. [2023-12-25 09:03:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-12-25 09:03:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1137 transitions. [2023-12-25 09:03:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 09:03:39,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:39,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:39,949 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 [2023-12-25 09:03:40,133 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 [2023-12-25 09:03:40,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:40,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1672354330, now seen corresponding path program 1 times [2023-12-25 09:03:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703733056] [2023-12-25 09:03:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:40,135 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 [2023-12-25 09:03:40,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:40,136 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) [2023-12-25 09:03:40,137 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 [2023-12-25 09:03:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:40,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:40,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:40,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:40,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703733056] [2023-12-25 09:03:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703733056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:40,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508986648] [2023-12-25 09:03:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:40,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:40,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:40,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:40,256 INFO L87 Difference]: Start difference. First operand 731 states and 1137 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-25 09:03:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:40,274 INFO L93 Difference]: Finished difference Result 1831 states and 2934 transitions. [2023-12-25 09:03:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-12-25 09:03:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:40,278 INFO L225 Difference]: With dead ends: 1831 [2023-12-25 09:03:40,278 INFO L226 Difference]: Without dead ends: 1251 [2023-12-25 09:03:40,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:40,301 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 105 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:40,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 434 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-25 09:03:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2023-12-25 09:03:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.5809294871794872) internal successors, (1973), 1248 states have internal predecessors, (1973), 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) [2023-12-25 09:03:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1973 transitions. [2023-12-25 09:03:40,322 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1973 transitions. Word has length 63 [2023-12-25 09:03:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:40,322 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1973 transitions. [2023-12-25 09:03:40,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-25 09:03:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1973 transitions. [2023-12-25 09:03:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 09:03:40,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:40,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:40,339 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 [2023-12-25 09:03:40,526 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 [2023-12-25 09:03:40,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:40,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1738687712, now seen corresponding path program 1 times [2023-12-25 09:03:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:40,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290270579] [2023-12-25 09:03:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:40,528 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 [2023-12-25 09:03:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:40,529 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) [2023-12-25 09:03:40,530 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 [2023-12-25 09:03:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:40,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:40,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:40,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:40,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290270579] [2023-12-25 09:03:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290270579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278953950] [2023-12-25 09:03:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:40,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:40,624 INFO L87 Difference]: Start difference. First operand 1249 states and 1973 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-12-25 09:03:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:40,654 INFO L93 Difference]: Finished difference Result 2272 states and 3639 transitions. [2023-12-25 09:03:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-25 09:03:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:40,666 INFO L225 Difference]: With dead ends: 2272 [2023-12-25 09:03:40,666 INFO L226 Difference]: Without dead ends: 1692 [2023-12-25 09:03:40,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:40,670 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 106 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:40,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 437 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2023-12-25 09:03:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1690. [2023-12-25 09:03:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.5837773830669035) internal successors, (2675), 1689 states have internal predecessors, (2675), 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) [2023-12-25 09:03:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2675 transitions. [2023-12-25 09:03:40,705 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2675 transitions. Word has length 65 [2023-12-25 09:03:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:40,705 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2675 transitions. [2023-12-25 09:03:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-12-25 09:03:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2675 transitions. [2023-12-25 09:03:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 09:03:40,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:40,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:40,716 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 [2023-12-25 09:03:40,916 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 [2023-12-25 09:03:40,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:40,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1392755917, now seen corresponding path program 1 times [2023-12-25 09:03:40,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:40,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617983551] [2023-12-25 09:03:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:40,918 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 [2023-12-25 09:03:40,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:40,932 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) [2023-12-25 09:03:40,933 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 [2023-12-25 09:03:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:40,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:41,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:41,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:41,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617983551] [2023-12-25 09:03:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617983551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:41,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:41,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:41,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852178050] [2023-12-25 09:03:41,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:41,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:41,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:41,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:41,080 INFO L87 Difference]: Start difference. First operand 1690 states and 2675 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-12-25 09:03:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:41,121 INFO L93 Difference]: Finished difference Result 4930 states and 7808 transitions. [2023-12-25 09:03:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:41,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-12-25 09:03:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:41,132 INFO L225 Difference]: With dead ends: 4930 [2023-12-25 09:03:41,132 INFO L226 Difference]: Without dead ends: 3274 [2023-12-25 09:03:41,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:41,136 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 387 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:41,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 462 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:41,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2023-12-25 09:03:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3272. [2023-12-25 09:03:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3271 states have (on average 1.5750535004585753) internal successors, (5152), 3271 states have internal predecessors, (5152), 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) [2023-12-25 09:03:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5152 transitions. [2023-12-25 09:03:41,194 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5152 transitions. Word has length 65 [2023-12-25 09:03:41,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:41,194 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 5152 transitions. [2023-12-25 09:03:41,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-12-25 09:03:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5152 transitions. [2023-12-25 09:03:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-25 09:03:41,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:41,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:41,200 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 [2023-12-25 09:03:41,397 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 [2023-12-25 09:03:41,398 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:41,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1086195641, now seen corresponding path program 1 times [2023-12-25 09:03:41,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:41,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239996275] [2023-12-25 09:03:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:41,399 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 [2023-12-25 09:03:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:41,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:03:41,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 09:03:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:41,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:41,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:41,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:41,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239996275] [2023-12-25 09:03:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239996275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528085580] [2023-12-25 09:03:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:41,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:41,469 INFO L87 Difference]: Start difference. First operand 3272 states and 5152 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-12-25 09:03:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:41,507 INFO L93 Difference]: Finished difference Result 9724 states and 15317 transitions. [2023-12-25 09:03:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:41,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2023-12-25 09:03:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:41,524 INFO L225 Difference]: With dead ends: 9724 [2023-12-25 09:03:41,524 INFO L226 Difference]: Without dead ends: 6507 [2023-12-25 09:03:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:41,532 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 177 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:41,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 456 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:41,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2023-12-25 09:03:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 3278. [2023-12-25 09:03:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 1.5740006103143118) internal successors, (5158), 3277 states have internal predecessors, (5158), 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) [2023-12-25 09:03:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5158 transitions. [2023-12-25 09:03:41,661 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5158 transitions. Word has length 66 [2023-12-25 09:03:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:41,661 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5158 transitions. [2023-12-25 09:03:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-12-25 09:03:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5158 transitions. [2023-12-25 09:03:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:03:41,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:41,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:41,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:41,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:03:41,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:41,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1271357646, now seen corresponding path program 1 times [2023-12-25 09:03:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:41,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133920941] [2023-12-25 09:03:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:41,868 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 [2023-12-25 09:03:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:41,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:03:41,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 09:03:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:41,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:41,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:41,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:41,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133920941] [2023-12-25 09:03:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133920941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445547751] [2023-12-25 09:03:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:41,967 INFO L87 Difference]: Start difference. First operand 3278 states and 5158 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-12-25 09:03:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:42,006 INFO L93 Difference]: Finished difference Result 6519 states and 10264 transitions. [2023-12-25 09:03:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:42,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2023-12-25 09:03:42,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:42,016 INFO L225 Difference]: With dead ends: 6519 [2023-12-25 09:03:42,016 INFO L226 Difference]: Without dead ends: 3272 [2023-12-25 09:03:42,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:42,022 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 47 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:42,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 614 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2023-12-25 09:03:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3272. [2023-12-25 09:03:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3271 states have (on average 1.573219199021706) internal successors, (5146), 3271 states have internal predecessors, (5146), 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) [2023-12-25 09:03:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5146 transitions. [2023-12-25 09:03:42,079 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5146 transitions. Word has length 67 [2023-12-25 09:03:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:42,079 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 5146 transitions. [2023-12-25 09:03:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-12-25 09:03:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5146 transitions. [2023-12-25 09:03:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:03:42,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:42,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:42,083 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 (13)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:42,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:03:42,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:42,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1467256045, now seen corresponding path program 1 times [2023-12-25 09:03:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:42,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918834093] [2023-12-25 09:03:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:42,285 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 [2023-12-25 09:03:42,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:42,286 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:03:42,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 09:03:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:42,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:42,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:42,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:42,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:42,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918834093] [2023-12-25 09:03:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918834093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750350928] [2023-12-25 09:03:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:42,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:42,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:42,412 INFO L87 Difference]: Start difference. First operand 3272 states and 5146 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2023-12-25 09:03:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:42,460 INFO L93 Difference]: Finished difference Result 8067 states and 12675 transitions. [2023-12-25 09:03:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2023-12-25 09:03:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:42,473 INFO L225 Difference]: With dead ends: 8067 [2023-12-25 09:03:42,473 INFO L226 Difference]: Without dead ends: 4831 [2023-12-25 09:03:42,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:42,478 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 470 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:42,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 367 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2023-12-25 09:03:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 4828. [2023-12-25 09:03:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4828 states, 4827 states have (on average 1.54982390718873) internal successors, (7481), 4827 states have internal predecessors, (7481), 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) [2023-12-25 09:03:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 7481 transitions. [2023-12-25 09:03:42,562 INFO L78 Accepts]: Start accepts. Automaton has 4828 states and 7481 transitions. Word has length 67 [2023-12-25 09:03:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:42,563 INFO L495 AbstractCegarLoop]: Abstraction has 4828 states and 7481 transitions. [2023-12-25 09:03:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2023-12-25 09:03:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states and 7481 transitions. [2023-12-25 09:03:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 09:03:42,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:42,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:42,578 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 (14)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:42,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:03:42,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:42,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1837419444, now seen corresponding path program 1 times [2023-12-25 09:03:42,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:42,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755086016] [2023-12-25 09:03:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:42,769 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 [2023-12-25 09:03:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:42,770 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-25 09:03:42,774 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 (15)] Waiting until timeout for monitored process [2023-12-25 09:03:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:42,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:03:42,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:43,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:43,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755086016] [2023-12-25 09:03:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755086016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:43,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991498138] [2023-12-25 09:03:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:43,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:03:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:43,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:03:43,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:43,118 INFO L87 Difference]: Start difference. First operand 4828 states and 7481 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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) [2023-12-25 09:03:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:43,211 INFO L93 Difference]: Finished difference Result 9168 states and 14403 transitions. [2023-12-25 09:03:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:03:43,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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) Word has length 70 [2023-12-25 09:03:43,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:43,232 INFO L225 Difference]: With dead ends: 9168 [2023-12-25 09:03:43,232 INFO L226 Difference]: Without dead ends: 4828 [2023-12-25 09:03:43,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:03:43,238 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 273 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:43,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 247 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:03:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2023-12-25 09:03:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4828. [2023-12-25 09:03:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4828 states, 4827 states have (on average 1.5349078102340998) internal successors, (7409), 4827 states have internal predecessors, (7409), 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) [2023-12-25 09:03:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 7409 transitions. [2023-12-25 09:03:43,314 INFO L78 Accepts]: Start accepts. Automaton has 4828 states and 7409 transitions. Word has length 70 [2023-12-25 09:03:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:43,314 INFO L495 AbstractCegarLoop]: Abstraction has 4828 states and 7409 transitions. [2023-12-25 09:03:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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) [2023-12-25 09:03:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states and 7409 transitions. [2023-12-25 09:03:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 09:03:43,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:43,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:43,318 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:43,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-25 09:03:43,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:43,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1650053081, now seen corresponding path program 1 times [2023-12-25 09:03:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543138091] [2023-12-25 09:03:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:43,520 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 [2023-12-25 09:03:43,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:43,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:03:43,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 09:03:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:43,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:43,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:43,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:43,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543138091] [2023-12-25 09:03:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543138091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:43,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:43,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137467933] [2023-12-25 09:03:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:43,630 INFO L87 Difference]: Start difference. First operand 4828 states and 7409 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2023-12-25 09:03:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:43,697 INFO L93 Difference]: Finished difference Result 12995 states and 20272 transitions. [2023-12-25 09:03:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) Word has length 70 [2023-12-25 09:03:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:43,711 INFO L225 Difference]: With dead ends: 12995 [2023-12-25 09:03:43,711 INFO L226 Difference]: Without dead ends: 8655 [2023-12-25 09:03:43,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:43,718 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 95 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:43,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 357 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8655 states. [2023-12-25 09:03:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8655 to 8653. [2023-12-25 09:03:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8653 states, 8652 states have (on average 1.541840036985668) internal successors, (13340), 8652 states have internal predecessors, (13340), 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) [2023-12-25 09:03:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 13340 transitions. [2023-12-25 09:03:43,846 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 13340 transitions. Word has length 70 [2023-12-25 09:03:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:43,846 INFO L495 AbstractCegarLoop]: Abstraction has 8653 states and 13340 transitions. [2023-12-25 09:03:43,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2023-12-25 09:03:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 13340 transitions. [2023-12-25 09:03:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-25 09:03:43,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:43,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:43,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:03:44,051 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:44,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1167507590, now seen corresponding path program 1 times [2023-12-25 09:03:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803904390] [2023-12-25 09:03:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:44,053 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 [2023-12-25 09:03:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:44,054 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-25 09:03:44,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 09:03:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:44,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:44,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:44,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:44,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:44,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803904390] [2023-12-25 09:03:44,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803904390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:44,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737031525] [2023-12-25 09:03:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:44,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:44,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:44,178 INFO L87 Difference]: Start difference. First operand 8653 states and 13340 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2023-12-25 09:03:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:44,229 INFO L93 Difference]: Finished difference Result 21981 states and 34122 transitions. [2023-12-25 09:03:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2023-12-25 09:03:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:44,254 INFO L225 Difference]: With dead ends: 21981 [2023-12-25 09:03:44,255 INFO L226 Difference]: Without dead ends: 13816 [2023-12-25 09:03:44,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:44,269 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:44,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 508 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13816 states. [2023-12-25 09:03:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13816 to 13814. [2023-12-25 09:03:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13814 states, 13813 states have (on average 1.5292840078187215) internal successors, (21124), 13813 states have internal predecessors, (21124), 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) [2023-12-25 09:03:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13814 states to 13814 states and 21124 transitions. [2023-12-25 09:03:44,504 INFO L78 Accepts]: Start accepts. Automaton has 13814 states and 21124 transitions. Word has length 72 [2023-12-25 09:03:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:44,504 INFO L495 AbstractCegarLoop]: Abstraction has 13814 states and 21124 transitions. [2023-12-25 09:03:44,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2023-12-25 09:03:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 13814 states and 21124 transitions. [2023-12-25 09:03:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-25 09:03:44,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:44,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:44,514 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 (17)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:44,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-25 09:03:44,709 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1278308038, now seen corresponding path program 1 times [2023-12-25 09:03:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638306751] [2023-12-25 09:03:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:44,710 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 [2023-12-25 09:03:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:44,711 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-25 09:03:44,713 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 (18)] Waiting until timeout for monitored process [2023-12-25 09:03:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:44,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:44,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:44,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:44,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:44,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638306751] [2023-12-25 09:03:44,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638306751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:44,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:44,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601437235] [2023-12-25 09:03:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:44,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:44,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:44,853 INFO L87 Difference]: Start difference. First operand 13814 states and 21124 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2023-12-25 09:03:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:44,942 INFO L93 Difference]: Finished difference Result 28587 states and 43609 transitions. [2023-12-25 09:03:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:44,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2023-12-25 09:03:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:44,974 INFO L225 Difference]: With dead ends: 28587 [2023-12-25 09:03:44,975 INFO L226 Difference]: Without dead ends: 14871 [2023-12-25 09:03:44,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:44,994 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 414 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:44,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 383 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14871 states. [2023-12-25 09:03:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14871 to 13938. [2023-12-25 09:03:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13938 states, 13937 states have (on average 1.5240726124704025) internal successors, (21241), 13937 states have internal predecessors, (21241), 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) [2023-12-25 09:03:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13938 states to 13938 states and 21241 transitions. [2023-12-25 09:03:45,317 INFO L78 Accepts]: Start accepts. Automaton has 13938 states and 21241 transitions. Word has length 72 [2023-12-25 09:03:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:45,317 INFO L495 AbstractCegarLoop]: Abstraction has 13938 states and 21241 transitions. [2023-12-25 09:03:45,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2023-12-25 09:03:45,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13938 states and 21241 transitions. [2023-12-25 09:03:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-25 09:03:45,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:45,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:45,325 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 (18)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:45,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-25 09:03:45,523 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:45,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash 790298285, now seen corresponding path program 1 times [2023-12-25 09:03:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:45,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991803143] [2023-12-25 09:03:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:45,524 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 [2023-12-25 09:03:45,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:45,566 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-25 09:03:45,570 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 (19)] Waiting until timeout for monitored process [2023-12-25 09:03:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:45,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:45,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:45,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:45,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991803143] [2023-12-25 09:03:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991803143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140011130] [2023-12-25 09:03:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:45,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:45,672 INFO L87 Difference]: Start difference. First operand 13938 states and 21241 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-12-25 09:03:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:45,729 INFO L93 Difference]: Finished difference Result 21419 states and 32603 transitions. [2023-12-25 09:03:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:45,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2023-12-25 09:03:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:45,750 INFO L225 Difference]: With dead ends: 21419 [2023-12-25 09:03:45,750 INFO L226 Difference]: Without dead ends: 12185 [2023-12-25 09:03:45,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:45,762 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 47 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:45,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 597 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12185 states. [2023-12-25 09:03:45,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12185 to 12185. [2023-12-25 09:03:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12185 states, 12184 states have (on average 1.5196158896913985) internal successors, (18515), 12184 states have internal predecessors, (18515), 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) [2023-12-25 09:03:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12185 states to 12185 states and 18515 transitions. [2023-12-25 09:03:46,009 INFO L78 Accepts]: Start accepts. Automaton has 12185 states and 18515 transitions. Word has length 72 [2023-12-25 09:03:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:46,009 INFO L495 AbstractCegarLoop]: Abstraction has 12185 states and 18515 transitions. [2023-12-25 09:03:46,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-12-25 09:03:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 12185 states and 18515 transitions. [2023-12-25 09:03:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 09:03:46,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:46,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:46,016 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 (19)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:46,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-25 09:03:46,217 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1540497697, now seen corresponding path program 1 times [2023-12-25 09:03:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341791254] [2023-12-25 09:03:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:46,218 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 [2023-12-25 09:03:46,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:46,219 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-25 09:03:46,220 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 (20)] Waiting until timeout for monitored process [2023-12-25 09:03:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:46,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:03:46,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:46,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:46,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341791254] [2023-12-25 09:03:46,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341791254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:46,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:46,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541607475] [2023-12-25 09:03:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:46,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:03:46,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:46,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:03:46,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:46,307 INFO L87 Difference]: Start difference. First operand 12185 states and 18515 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-12-25 09:03:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:46,363 INFO L93 Difference]: Finished difference Result 22638 states and 34732 transitions. [2023-12-25 09:03:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:03:46,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2023-12-25 09:03:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:46,389 INFO L225 Difference]: With dead ends: 22638 [2023-12-25 09:03:46,389 INFO L226 Difference]: Without dead ends: 16492 [2023-12-25 09:03:46,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:03:46,402 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 96 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:46,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16492 states. [2023-12-25 09:03:46,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16492 to 16490. [2023-12-25 09:03:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16490 states, 16489 states have (on average 1.5179816847595367) internal successors, (25030), 16489 states have internal predecessors, (25030), 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) [2023-12-25 09:03:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16490 states to 16490 states and 25030 transitions. [2023-12-25 09:03:46,659 INFO L78 Accepts]: Start accepts. Automaton has 16490 states and 25030 transitions. Word has length 73 [2023-12-25 09:03:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:46,659 INFO L495 AbstractCegarLoop]: Abstraction has 16490 states and 25030 transitions. [2023-12-25 09:03:46,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-12-25 09:03:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 16490 states and 25030 transitions. [2023-12-25 09:03:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 09:03:46,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:46,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:46,671 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 (20)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-25 09:03:46,865 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:46,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1676904954, now seen corresponding path program 1 times [2023-12-25 09:03:46,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:46,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468851828] [2023-12-25 09:03:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:46,926 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 [2023-12-25 09:03:46,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:46,928 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-25 09:03:46,929 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 (21)] Waiting until timeout for monitored process [2023-12-25 09:03:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:46,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:46,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:47,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:47,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468851828] [2023-12-25 09:03:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468851828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:47,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:47,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:03:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711842886] [2023-12-25 09:03:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:47,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:47,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:47,014 INFO L87 Difference]: Start difference. First operand 16490 states and 25030 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-12-25 09:03:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:47,113 INFO L93 Difference]: Finished difference Result 42464 states and 64383 transitions. [2023-12-25 09:03:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2023-12-25 09:03:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:47,164 INFO L225 Difference]: With dead ends: 42464 [2023-12-25 09:03:47,164 INFO L226 Difference]: Without dead ends: 26116 [2023-12-25 09:03:47,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:47,184 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 421 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:47,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 433 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26116 states. [2023-12-25 09:03:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26116 to 26114. [2023-12-25 09:03:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26114 states, 26113 states have (on average 1.499827672040746) internal successors, (39165), 26113 states have internal predecessors, (39165), 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) [2023-12-25 09:03:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26114 states to 26114 states and 39165 transitions. [2023-12-25 09:03:47,575 INFO L78 Accepts]: Start accepts. Automaton has 26114 states and 39165 transitions. Word has length 73 [2023-12-25 09:03:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:47,575 INFO L495 AbstractCegarLoop]: Abstraction has 26114 states and 39165 transitions. [2023-12-25 09:03:47,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-12-25 09:03:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 26114 states and 39165 transitions. [2023-12-25 09:03:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 09:03:47,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:47,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:47,581 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 (21)] Ended with exit code 0 [2023-12-25 09:03:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-25 09:03:47,781 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:47,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash 847495241, now seen corresponding path program 1 times [2023-12-25 09:03:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457425723] [2023-12-25 09:03:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:47,782 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 [2023-12-25 09:03:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:47,783 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-25 09:03:47,783 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 (22)] Waiting until timeout for monitored process [2023-12-25 09:03:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:47,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:47,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:47,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:47,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457425723] [2023-12-25 09:03:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457425723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:47,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:47,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362934164] [2023-12-25 09:03:47,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:47,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:47,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:47,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:47,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:47,938 INFO L87 Difference]: Start difference. First operand 26114 states and 39165 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2023-12-25 09:03:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:48,034 INFO L93 Difference]: Finished difference Result 37461 states and 56097 transitions. [2023-12-25 09:03:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:48,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2023-12-25 09:03:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:48,067 INFO L225 Difference]: With dead ends: 37461 [2023-12-25 09:03:48,067 INFO L226 Difference]: Without dead ends: 22594 [2023-12-25 09:03:48,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:48,085 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 23 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:48,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22594 states. [2023-12-25 09:03:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22594 to 22594. [2023-12-25 09:03:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22594 states, 22593 states have (on average 1.4978975788961182) internal successors, (33842), 22593 states have internal predecessors, (33842), 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) [2023-12-25 09:03:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22594 states to 22594 states and 33842 transitions. [2023-12-25 09:03:48,404 INFO L78 Accepts]: Start accepts. Automaton has 22594 states and 33842 transitions. Word has length 75 [2023-12-25 09:03:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:48,404 INFO L495 AbstractCegarLoop]: Abstraction has 22594 states and 33842 transitions. [2023-12-25 09:03:48,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2023-12-25 09:03:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 22594 states and 33842 transitions. [2023-12-25 09:03:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 09:03:48,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:48,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:48,409 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 (22)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:48,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-25 09:03:48,610 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:48,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1352366802, now seen corresponding path program 1 times [2023-12-25 09:03:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49845710] [2023-12-25 09:03:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:48,611 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 [2023-12-25 09:03:48,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:48,612 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-25 09:03:48,613 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 (23)] Waiting until timeout for monitored process [2023-12-25 09:03:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:48,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:03:48,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:48,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:48,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49845710] [2023-12-25 09:03:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49845710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:48,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:48,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:03:48,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581802964] [2023-12-25 09:03:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:48,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:03:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:48,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:03:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:48,877 INFO L87 Difference]: Start difference. First operand 22594 states and 33842 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2023-12-25 09:03:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:49,256 INFO L93 Difference]: Finished difference Result 86484 states and 131994 transitions. [2023-12-25 09:03:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:03:49,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2023-12-25 09:03:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:49,356 INFO L225 Difference]: With dead ends: 86484 [2023-12-25 09:03:49,357 INFO L226 Difference]: Without dead ends: 64936 [2023-12-25 09:03:49,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:03:49,373 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 551 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:49,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 576 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:03:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64936 states. [2023-12-25 09:03:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64936 to 55450. [2023-12-25 09:03:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55450 states, 55449 states have (on average 1.4963660300456274) internal successors, (82972), 55449 states have internal predecessors, (82972), 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) [2023-12-25 09:03:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55450 states to 55450 states and 82972 transitions. [2023-12-25 09:03:50,227 INFO L78 Accepts]: Start accepts. Automaton has 55450 states and 82972 transitions. Word has length 77 [2023-12-25 09:03:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:50,227 INFO L495 AbstractCegarLoop]: Abstraction has 55450 states and 82972 transitions. [2023-12-25 09:03:50,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2023-12-25 09:03:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 55450 states and 82972 transitions. [2023-12-25 09:03:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 09:03:50,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:50,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:50,250 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 (23)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:50,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-25 09:03:50,432 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:50,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1088806298, now seen corresponding path program 1 times [2023-12-25 09:03:50,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:50,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786738257] [2023-12-25 09:03:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:50,433 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 [2023-12-25 09:03:50,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:50,434 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-25 09:03:50,440 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 (24)] Waiting until timeout for monitored process [2023-12-25 09:03:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:50,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:50,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:50,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:50,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786738257] [2023-12-25 09:03:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786738257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:50,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698996152] [2023-12-25 09:03:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:50,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:50,607 INFO L87 Difference]: Start difference. First operand 55450 states and 82972 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2023-12-25 09:03:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:51,168 INFO L93 Difference]: Finished difference Result 152698 states and 231431 transitions. [2023-12-25 09:03:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2023-12-25 09:03:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:51,322 INFO L225 Difference]: With dead ends: 152698 [2023-12-25 09:03:51,322 INFO L226 Difference]: Without dead ends: 98294 [2023-12-25 09:03:51,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:51,520 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 324 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:51,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 458 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:03:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98294 states. [2023-12-25 09:03:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98294 to 88432. [2023-12-25 09:03:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88432 states, 88431 states have (on average 1.500446675939433) internal successors, (132686), 88431 states have internal predecessors, (132686), 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) [2023-12-25 09:03:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88432 states to 88432 states and 132686 transitions. [2023-12-25 09:03:52,714 INFO L78 Accepts]: Start accepts. Automaton has 88432 states and 132686 transitions. Word has length 78 [2023-12-25 09:03:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:52,715 INFO L495 AbstractCegarLoop]: Abstraction has 88432 states and 132686 transitions. [2023-12-25 09:03:52,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2023-12-25 09:03:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 88432 states and 132686 transitions. [2023-12-25 09:03:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 09:03:52,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:52,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:52,728 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 (24)] Forceful destruction successful, exit code 0 [2023-12-25 09:03:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-25 09:03:52,920 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:52,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash 548796953, now seen corresponding path program 1 times [2023-12-25 09:03:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756934958] [2023-12-25 09:03:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:52,921 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 [2023-12-25 09:03:52,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:52,922 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-25 09:03:52,922 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 (25)] Waiting until timeout for monitored process [2023-12-25 09:03:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:53,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:53,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:53,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:53,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756934958] [2023-12-25 09:03:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756934958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:53,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:53,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029703039] [2023-12-25 09:03:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:53,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:53,362 INFO L87 Difference]: Start difference. First operand 88432 states and 132686 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2023-12-25 09:03:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:54,236 INFO L93 Difference]: Finished difference Result 233554 states and 352579 transitions. [2023-12-25 09:03:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2023-12-25 09:03:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:54,638 INFO L225 Difference]: With dead ends: 233554 [2023-12-25 09:03:54,638 INFO L226 Difference]: Without dead ends: 146168 [2023-12-25 09:03:54,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:54,680 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 225 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:54,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 628 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:03:54,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146168 states. [2023-12-25 09:03:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146168 to 136126. [2023-12-25 09:03:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136126 states, 136125 states have (on average 1.492892561983471) internal successors, (203220), 136125 states have internal predecessors, (203220), 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) [2023-12-25 09:03:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136126 states to 136126 states and 203220 transitions. [2023-12-25 09:03:56,622 INFO L78 Accepts]: Start accepts. Automaton has 136126 states and 203220 transitions. Word has length 79 [2023-12-25 09:03:56,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:03:56,623 INFO L495 AbstractCegarLoop]: Abstraction has 136126 states and 203220 transitions. [2023-12-25 09:03:56,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2023-12-25 09:03:56,623 INFO L276 IsEmpty]: Start isEmpty. Operand 136126 states and 203220 transitions. [2023-12-25 09:03:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 09:03:56,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:03:56,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:03:56,628 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 (25)] Ended with exit code 0 [2023-12-25 09:03:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-25 09:03:56,828 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:03:56,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:03:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash -220551795, now seen corresponding path program 1 times [2023-12-25 09:03:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:03:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21957026] [2023-12-25 09:03:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:03:56,829 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 [2023-12-25 09:03:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:03:56,829 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-25 09:03:56,830 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 (26)] Waiting until timeout for monitored process [2023-12-25 09:03:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:03:56,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:03:56,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:03:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:03:57,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:03:57,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:03:57,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21957026] [2023-12-25 09:03:57,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21957026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:03:57,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:03:57,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:03:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258956716] [2023-12-25 09:03:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:03:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:03:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:03:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:03:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:57,012 INFO L87 Difference]: Start difference. First operand 136126 states and 203220 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2023-12-25 09:03:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:03:58,731 INFO L93 Difference]: Finished difference Result 398794 states and 595719 transitions. [2023-12-25 09:03:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:03:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2023-12-25 09:03:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:03:59,295 INFO L225 Difference]: With dead ends: 398794 [2023-12-25 09:03:59,296 INFO L226 Difference]: Without dead ends: 263714 [2023-12-25 09:03:59,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:03:59,661 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 320 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:03:59,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 459 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:03:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263714 states. [2023-12-25 09:04:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263714 to 199180. [2023-12-25 09:04:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199180 states, 199179 states have (on average 1.4797543917782496) internal successors, (294736), 199179 states have internal predecessors, (294736), 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) [2023-12-25 09:04:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199180 states to 199180 states and 294736 transitions. [2023-12-25 09:04:03,046 INFO L78 Accepts]: Start accepts. Automaton has 199180 states and 294736 transitions. Word has length 80 [2023-12-25 09:04:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:04:03,046 INFO L495 AbstractCegarLoop]: Abstraction has 199180 states and 294736 transitions. [2023-12-25 09:04:03,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2023-12-25 09:04:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 199180 states and 294736 transitions. [2023-12-25 09:04:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 09:04:03,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:04:03,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:04:03,052 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 (26)] Ended with exit code 0 [2023-12-25 09:04:03,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-25 09:04:03,250 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:04:03,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:04:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1418577803, now seen corresponding path program 1 times [2023-12-25 09:04:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:04:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304622958] [2023-12-25 09:04:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:04:03,251 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 [2023-12-25 09:04:03,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:04:03,255 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-25 09:04:03,257 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 (27)] Waiting until timeout for monitored process [2023-12-25 09:04:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:04:03,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:04:03,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:04:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:04:03,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:04:03,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:04:03,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304622958] [2023-12-25 09:04:03,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304622958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:04:03,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:04:03,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:04:03,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519673879] [2023-12-25 09:04:03,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:04:03,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:04:03,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:04:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:04:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:04:03,911 INFO L87 Difference]: Start difference. First operand 199180 states and 294736 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2023-12-25 09:04:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:04:06,033 INFO L93 Difference]: Finished difference Result 529116 states and 789360 transitions. [2023-12-25 09:04:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:04:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2023-12-25 09:04:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:04:06,728 INFO L225 Difference]: With dead ends: 529116 [2023-12-25 09:04:06,728 INFO L226 Difference]: Without dead ends: 330982 [2023-12-25 09:04:06,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:04:06,805 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 593 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:04:06,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 582 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:04:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330982 states. [2023-12-25 09:04:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330982 to 315076. [2023-12-25 09:04:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315076 states, 315075 states have (on average 1.4795524875029755) internal successors, (466170), 315075 states have internal predecessors, (466170), 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) [2023-12-25 09:04:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315076 states to 315076 states and 466170 transitions. [2023-12-25 09:04:11,882 INFO L78 Accepts]: Start accepts. Automaton has 315076 states and 466170 transitions. Word has length 85 [2023-12-25 09:04:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:04:11,883 INFO L495 AbstractCegarLoop]: Abstraction has 315076 states and 466170 transitions. [2023-12-25 09:04:11,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2023-12-25 09:04:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 315076 states and 466170 transitions. [2023-12-25 09:04:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 09:04:11,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:04:11,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:04:11,891 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 (27)] Forceful destruction successful, exit code 0 [2023-12-25 09:04:12,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-25 09:04:12,089 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:04:12,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:04:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1024329627, now seen corresponding path program 1 times [2023-12-25 09:04:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:04:12,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994080851] [2023-12-25 09:04:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:04:12,090 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 [2023-12-25 09:04:12,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:04:12,091 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-25 09:04:12,476 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 (28)] Waiting until timeout for monitored process [2023-12-25 09:04:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:04:12,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 09:04:12,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:04:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:04:12,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:04:12,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:04:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994080851] [2023-12-25 09:04:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994080851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:04:12,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:04:12,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:04:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998689090] [2023-12-25 09:04:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:04:12,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:04:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:04:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:04:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:12,590 INFO L87 Difference]: Start difference. First operand 315076 states and 466170 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-12-25 09:04:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:04:15,003 INFO L93 Difference]: Finished difference Result 618572 states and 912031 transitions. [2023-12-25 09:04:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:04:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 86 [2023-12-25 09:04:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:04:16,305 INFO L225 Difference]: With dead ends: 618572 [2023-12-25 09:04:16,305 INFO L226 Difference]: Without dead ends: 618570 [2023-12-25 09:04:16,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:04:16,436 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 226 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 619 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 [2023-12-25 09:04:16,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 619 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:04:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618570 states. [2023-12-25 09:04:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618570 to 328324. [2023-12-25 09:04:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328324 states, 328323 states have (on average 1.4597088842389963) internal successors, (479256), 328323 states have internal predecessors, (479256), 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) [2023-12-25 09:04:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328324 states to 328324 states and 479256 transitions. [2023-12-25 09:04:24,582 INFO L78 Accepts]: Start accepts. Automaton has 328324 states and 479256 transitions. Word has length 86 [2023-12-25 09:04:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:04:24,582 INFO L495 AbstractCegarLoop]: Abstraction has 328324 states and 479256 transitions. [2023-12-25 09:04:24,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-12-25 09:04:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 328324 states and 479256 transitions. [2023-12-25 09:04:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 09:04:24,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:04:24,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:04:24,600 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 (28)] Ended with exit code 0 [2023-12-25 09:04:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-25 09:04:24,801 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:04:24,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:04:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1260396016, now seen corresponding path program 1 times [2023-12-25 09:04:24,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:04:24,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432687754] [2023-12-25 09:04:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:04:24,816 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 [2023-12-25 09:04:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:04:24,833 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-25 09:04:24,872 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 (29)] Waiting until timeout for monitored process [2023-12-25 09:04:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:04:24,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:04:24,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:04:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 09:04:25,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:04:25,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:04:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432687754] [2023-12-25 09:04:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432687754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:04:25,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:04:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:04:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117293991] [2023-12-25 09:04:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:04:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:04:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:04:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:04:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:25,093 INFO L87 Difference]: Start difference. First operand 328324 states and 479256 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-12-25 09:04:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:04:27,729 INFO L93 Difference]: Finished difference Result 709528 states and 1037595 transitions. [2023-12-25 09:04:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:04:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 [2023-12-25 09:04:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:04:29,033 INFO L225 Difference]: With dead ends: 709528 [2023-12-25 09:04:29,033 INFO L226 Difference]: Without dead ends: 441710 [2023-12-25 09:04:29,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:29,146 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 187 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:04:29,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 634 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:04:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441710 states. [2023-12-25 09:04:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441710 to 441706. [2023-12-25 09:04:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441706 states, 441705 states have (on average 1.4520822721046853) internal successors, (641392), 441705 states have internal predecessors, (641392), 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) [2023-12-25 09:04:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441706 states to 441706 states and 641392 transitions. [2023-12-25 09:04:35,708 INFO L78 Accepts]: Start accepts. Automaton has 441706 states and 641392 transitions. Word has length 110 [2023-12-25 09:04:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:04:35,708 INFO L495 AbstractCegarLoop]: Abstraction has 441706 states and 641392 transitions. [2023-12-25 09:04:35,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-12-25 09:04:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 441706 states and 641392 transitions. [2023-12-25 09:04:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 09:04:35,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:04:35,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:04:35,721 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 (29)] Ended with exit code 0 [2023-12-25 09:04:35,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-25 09:04:35,921 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:04:35,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:04:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1415234670, now seen corresponding path program 1 times [2023-12-25 09:04:35,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:04:35,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389269838] [2023-12-25 09:04:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:04:35,925 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 [2023-12-25 09:04:35,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:04:35,926 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-25 09:04:35,929 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 (30)] Waiting until timeout for monitored process [2023-12-25 09:04:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:04:36,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:04:36,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:04:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 09:04:36,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:04:36,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:04:36,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389269838] [2023-12-25 09:04:36,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389269838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:04:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:04:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:04:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96445635] [2023-12-25 09:04:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:04:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:04:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:04:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:04:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:36,099 INFO L87 Difference]: Start difference. First operand 441706 states and 641392 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-12-25 09:04:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:04:39,768 INFO L93 Difference]: Finished difference Result 939616 states and 1364655 transitions. [2023-12-25 09:04:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:04:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 [2023-12-25 09:04:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:04:41,196 INFO L225 Difference]: With dead ends: 939616 [2023-12-25 09:04:41,197 INFO L226 Difference]: Without dead ends: 562052 [2023-12-25 09:04:41,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:41,560 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 181 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:04:41,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 641 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:04:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562052 states. [2023-12-25 09:04:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562052 to 562048. [2023-12-25 09:04:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562048 states, 562047 states have (on average 1.4432067069124113) internal successors, (811150), 562047 states have internal predecessors, (811150), 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) [2023-12-25 09:04:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562048 states to 562048 states and 811150 transitions. [2023-12-25 09:04:50,348 INFO L78 Accepts]: Start accepts. Automaton has 562048 states and 811150 transitions. Word has length 110 [2023-12-25 09:04:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:04:50,349 INFO L495 AbstractCegarLoop]: Abstraction has 562048 states and 811150 transitions. [2023-12-25 09:04:50,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-12-25 09:04:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 562048 states and 811150 transitions. [2023-12-25 09:04:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-25 09:04:50,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:04:50,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:04:50,358 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 (30)] Ended with exit code 0 [2023-12-25 09:04:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-25 09:04:50,556 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:04:50,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:04:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash 857457434, now seen corresponding path program 1 times [2023-12-25 09:04:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:04:50,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404134238] [2023-12-25 09:04:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:04:50,557 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 [2023-12-25 09:04:50,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:04:50,558 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-25 09:04:50,561 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 (31)] Waiting until timeout for monitored process [2023-12-25 09:04:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:04:50,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:04:50,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:04:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 09:04:50,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:04:50,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:04:50,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404134238] [2023-12-25 09:04:50,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404134238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:04:50,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:04:50,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:04:50,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726094066] [2023-12-25 09:04:50,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:04:50,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:04:50,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:04:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:04:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:50,719 INFO L87 Difference]: Start difference. First operand 562048 states and 811150 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-12-25 09:04:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:04:55,365 INFO L93 Difference]: Finished difference Result 1203076 states and 1745577 transitions. [2023-12-25 09:04:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:04:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 [2023-12-25 09:04:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:04:57,220 INFO L225 Difference]: With dead ends: 1203076 [2023-12-25 09:04:57,220 INFO L226 Difference]: Without dead ends: 731066 [2023-12-25 09:04:57,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:04:57,439 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 177 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:04:57,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:04:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731066 states. [2023-12-25 09:05:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731066 to 731062. [2023-12-25 09:05:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731062 states, 731061 states have (on average 1.4168475681235901) internal successors, (1035802), 731061 states have internal predecessors, (1035802), 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) [2023-12-25 09:05:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731062 states to 731062 states and 1035802 transitions. [2023-12-25 09:05:09,819 INFO L78 Accepts]: Start accepts. Automaton has 731062 states and 1035802 transitions. Word has length 110 [2023-12-25 09:05:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:05:09,819 INFO L495 AbstractCegarLoop]: Abstraction has 731062 states and 1035802 transitions. [2023-12-25 09:05:09,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-12-25 09:05:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 731062 states and 1035802 transitions. [2023-12-25 09:05:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-25 09:05:09,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:05:09,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:05:09,884 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 (31)] Forceful destruction successful, exit code 0 [2023-12-25 09:05:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-25 09:05:10,083 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:05:10,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:05:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash -658832638, now seen corresponding path program 1 times [2023-12-25 09:05:10,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:05:10,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143790348] [2023-12-25 09:05:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:05:10,084 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 [2023-12-25 09:05:10,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:05:10,084 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-25 09:05:10,128 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 (32)] Waiting until timeout for monitored process [2023-12-25 09:05:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:05:10,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:05:10,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:05:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 63 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-25 09:05:10,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:05:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 63 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-25 09:05:10,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:05:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143790348] [2023-12-25 09:05:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143790348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:05:10,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:05:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-25 09:05:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378812879] [2023-12-25 09:05:10,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:05:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:05:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:05:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:05:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:05:10,587 INFO L87 Difference]: Start difference. First operand 731062 states and 1035802 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-12-25 09:05:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:05:15,406 INFO L93 Difference]: Finished difference Result 1244938 states and 1798222 transitions. [2023-12-25 09:05:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:05:15,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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 180 [2023-12-25 09:05:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:05:18,114 INFO L225 Difference]: With dead ends: 1244938 [2023-12-25 09:05:18,115 INFO L226 Difference]: Without dead ends: 772928 [2023-12-25 09:05:18,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:05:18,730 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 225 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:05:18,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1125 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:05:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772928 states. [2023-12-25 09:05:28,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772928 to 772922. [2023-12-25 09:05:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772922 states, 772921 states have (on average 1.3962073743629686) internal successors, (1079158), 772921 states have internal predecessors, (1079158), 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) [2023-12-25 09:05:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772922 states to 772922 states and 1079158 transitions. [2023-12-25 09:05:31,697 INFO L78 Accepts]: Start accepts. Automaton has 772922 states and 1079158 transitions. Word has length 180 [2023-12-25 09:05:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:05:31,699 INFO L495 AbstractCegarLoop]: Abstraction has 772922 states and 1079158 transitions. [2023-12-25 09:05:31,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-12-25 09:05:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 772922 states and 1079158 transitions. [2023-12-25 09:05:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-25 09:05:31,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:05:31,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:05:31,746 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 (32)] Forceful destruction successful, exit code 0 [2023-12-25 09:05:31,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-25 09:05:31,946 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:05:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:05:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1459020812, now seen corresponding path program 1 times [2023-12-25 09:05:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:05:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968598256] [2023-12-25 09:05:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:05:31,947 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 [2023-12-25 09:05:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:05:31,948 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-25 09:05:31,948 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 (33)] Waiting until timeout for monitored process [2023-12-25 09:05:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:05:32,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:05:32,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:05:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 70 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 09:05:32,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:05:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 70 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 09:05:32,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:05:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968598256] [2023-12-25 09:05:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968598256] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:05:32,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:05:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-25 09:05:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749420051] [2023-12-25 09:05:32,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:05:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:05:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:05:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:05:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:05:32,363 INFO L87 Difference]: Start difference. First operand 772922 states and 1079158 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-12-25 09:05:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:05:37,693 INFO L93 Difference]: Finished difference Result 1270254 states and 1786226 transitions. [2023-12-25 09:05:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:05:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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 180 [2023-12-25 09:05:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:05:40,263 INFO L225 Difference]: With dead ends: 1270254 [2023-12-25 09:05:40,263 INFO L226 Difference]: Without dead ends: 805104 [2023-12-25 09:05:40,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:05:40,496 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 242 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:05:40,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1230 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:05:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805104 states. [2023-12-25 09:05:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805104 to 805098. [2023-12-25 09:05:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805098 states, 805097 states have (on average 1.3959932778286344) internal successors, (1123910), 805097 states have internal predecessors, (1123910), 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) [2023-12-25 09:05:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805098 states to 805098 states and 1123910 transitions. [2023-12-25 09:05:52,852 INFO L78 Accepts]: Start accepts. Automaton has 805098 states and 1123910 transitions. Word has length 180 [2023-12-25 09:05:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:05:52,853 INFO L495 AbstractCegarLoop]: Abstraction has 805098 states and 1123910 transitions. [2023-12-25 09:05:52,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-12-25 09:05:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 805098 states and 1123910 transitions. [2023-12-25 09:05:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-25 09:05:52,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:05:52,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:05:52,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-25 09:05:53,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-12-25 09:05:53,100 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:05:53,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:05:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash -917509060, now seen corresponding path program 1 times [2023-12-25 09:05:53,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:05:53,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901233714] [2023-12-25 09:05:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:05:53,101 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 [2023-12-25 09:05:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:05:53,102 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-25 09:05:53,144 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 (34)] Waiting until timeout for monitored process [2023-12-25 09:05:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:05:53,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:05:53,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:05:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 09:05:53,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:05:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 09:05:53,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:05:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901233714] [2023-12-25 09:05:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901233714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:05:53,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:05:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-25 09:05:53,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222405861] [2023-12-25 09:05:53,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:05:53,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:05:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:05:53,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:05:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:05:53,671 INFO L87 Difference]: Start difference. First operand 805098 states and 1123910 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2023-12-25 09:05:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:05:59,687 INFO L93 Difference]: Finished difference Result 1438126 states and 2023656 transitions. [2023-12-25 09:05:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:05:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 181 [2023-12-25 09:05:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:06:03,225 INFO L225 Difference]: With dead ends: 1438126 [2023-12-25 09:06:03,225 INFO L226 Difference]: Without dead ends: 914370 [2023-12-25 09:06:03,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 354 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:06:03,613 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 233 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:06:03,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1225 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:06:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914370 states. [2023-12-25 09:06:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914370 to 914364. [2023-12-25 09:06:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914364 states, 914363 states have (on average 1.3962463485508492) internal successors, (1276676), 914363 states have internal predecessors, (1276676), 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) [2023-12-25 09:06:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914364 states to 914364 states and 1276676 transitions. [2023-12-25 09:06:22,441 INFO L78 Accepts]: Start accepts. Automaton has 914364 states and 1276676 transitions. Word has length 181 [2023-12-25 09:06:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:06:22,442 INFO L495 AbstractCegarLoop]: Abstraction has 914364 states and 1276676 transitions. [2023-12-25 09:06:22,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2023-12-25 09:06:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 914364 states and 1276676 transitions. [2023-12-25 09:06:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-25 09:06:22,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:06:22,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:06:22,492 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 (34)] Forceful destruction successful, exit code 0 [2023-12-25 09:06:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-12-25 09:06:22,694 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:06:22,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:06:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1605950008, now seen corresponding path program 1 times [2023-12-25 09:06:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:06:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995052500] [2023-12-25 09:06:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:06:22,695 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 [2023-12-25 09:06:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:06:22,696 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-25 09:06:22,725 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 (35)] Waiting until timeout for monitored process [2023-12-25 09:06:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:06:22,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 09:06:22,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:06:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 48 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 09:06:24,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:06:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 50 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 09:06:24,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:06:24,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995052500] [2023-12-25 09:06:24,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995052500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:06:24,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:06:24,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-12-25 09:06:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10363143] [2023-12-25 09:06:24,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:06:24,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 09:06:24,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:06:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 09:06:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-12-25 09:06:24,744 INFO L87 Difference]: Start difference. First operand 914364 states and 1276676 transitions. Second operand has 22 states, 22 states have (on average 14.454545454545455) internal successors, (318), 22 states have internal predecessors, (318), 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)