/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_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 10:11:13,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 10:11:14,080 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 10:11:14,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 10:11:14,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 10:11:14,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 10:11:14,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 10:11:14,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 10:11:14,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 10:11:14,115 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 10:11:14,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 10:11:14,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 10:11:14,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 10:11:14,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 10:11:14,117 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 10:11:14,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 10:11:14,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 10:11:14,118 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 10:11:14,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 10:11:14,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 10:11:14,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 10:11:14,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 10:11:14,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 10:11:14,120 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 10:11:14,121 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 10:11:14,121 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 10:11:14,121 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 10:11:14,121 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 10:11:14,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 10:11:14,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 10:11:14,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 10:11:14,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 10:11:14,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 10:11:14,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 10:11:14,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 10:11:14,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 10:11:14,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 10:11:14,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 10:11:14,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 10:11:14,125 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 10:11:14,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 10:11:14,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 10:11:14,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 10:11:14,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 10:11:14,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 10:11:14,381 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 10:11:14,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-25 10:11:15,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 10:11:15,685 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 10:11:15,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-25 10:11:15,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879ffa2be/39955b3a646d440082031a5e9c7b51d9/FLAG32d013bc0 [2023-12-25 10:11:15,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879ffa2be/39955b3a646d440082031a5e9c7b51d9 [2023-12-25 10:11:15,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 10:11:15,711 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 10:11:15,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 10:11:15,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 10:11:15,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 10:11:15,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:11:15" (1/1) ... [2023-12-25 10:11:15,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aca9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:15, skipping insertion in model container [2023-12-25 10:11:15,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:11:15" (1/1) ... [2023-12-25 10:11:15,761 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 10:11:15,940 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_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4900,4913] [2023-12-25 10:11:15,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 10:11:15,977 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 10:11:16,005 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_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4900,4913] [2023-12-25 10:11:16,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 10:11:16,052 INFO L206 MainTranslator]: Completed translation [2023-12-25 10:11:16,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16 WrapperNode [2023-12-25 10:11:16,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 10:11:16,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 10:11:16,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 10:11:16,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 10:11:16,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,094 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 357 [2023-12-25 10:11:16,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 10:11:16,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 10:11:16,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 10:11:16,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 10:11:16,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,127 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 10:11:16,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 10:11:16,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 10:11:16,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 10:11:16,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 10:11:16,157 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (1/1) ... [2023-12-25 10:11:16,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 10:11:16,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 10:11:16,182 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 10:11:16,188 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 10:11:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 10:11:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 10:11:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 10:11:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 10:11:16,305 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 10:11:16,307 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 10:11:16,648 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 10:11:16,685 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 10:11:16,685 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 10:11:16,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:11:16 BoogieIcfgContainer [2023-12-25 10:11:16,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 10:11:16,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 10:11:16,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 10:11:16,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 10:11:16,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:11:15" (1/3) ... [2023-12-25 10:11:16,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112d8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:11:16, skipping insertion in model container [2023-12-25 10:11:16,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:11:16" (2/3) ... [2023-12-25 10:11:16,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112d8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:11:16, skipping insertion in model container [2023-12-25 10:11:16,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:11:16" (3/3) ... [2023-12-25 10:11:16,692 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-25 10:11:16,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 10:11:16,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 10:11:16,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 10:11:16,761 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;@9569af5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 10:11:16,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 10:11:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 76 states have internal predecessors, (131), 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 10:11:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 10:11:16,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:16,778 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] [2023-12-25 10:11:16,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:16,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1988474663, now seen corresponding path program 1 times [2023-12-25 10:11:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:16,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168353786] [2023-12-25 10:11:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:16,792 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 10:11:16,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:16,793 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 10:11:16,796 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 10:11:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:16,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:16,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:17,012 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 10:11:17,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:17,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168353786] [2023-12-25 10:11:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168353786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:17,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:17,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610666970] [2023-12-25 10:11:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:17,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:17,055 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 76 states have internal predecessors, (131), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 10:11:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:17,120 INFO L93 Difference]: Finished difference Result 173 states and 282 transitions. [2023-12-25 10:11:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-25 10:11:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:17,130 INFO L225 Difference]: With dead ends: 173 [2023-12-25 10:11:17,130 INFO L226 Difference]: Without dead ends: 117 [2023-12-25 10:11:17,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 10:11:17,136 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 90 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:17,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-25 10:11:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2023-12-25 10:11:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4736842105263157) internal successors, (168), 114 states have internal predecessors, (168), 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 10:11:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2023-12-25 10:11:17,177 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 46 [2023-12-25 10:11:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:17,178 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2023-12-25 10:11:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 10:11:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2023-12-25 10:11:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 10:11:17,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:17,180 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] [2023-12-25 10:11:17,185 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 10:11:17,382 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 10:11:17,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:17,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash 279676618, now seen corresponding path program 1 times [2023-12-25 10:11:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164590611] [2023-12-25 10:11:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:17,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 10:11:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:17,386 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 10:11:17,389 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 10:11:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:17,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 10:11:17,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:17,865 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 10:11:17,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:17,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164590611] [2023-12-25 10:11:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164590611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 10:11:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475375265] [2023-12-25 10:11:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 10:11:17,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 10:11:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 10:11:17,870 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 10:11:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:17,980 INFO L93 Difference]: Finished difference Result 205 states and 311 transitions. [2023-12-25 10:11:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 10:11:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-12-25 10:11:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:17,985 INFO L225 Difference]: With dead ends: 205 [2023-12-25 10:11:17,986 INFO L226 Difference]: Without dead ends: 115 [2023-12-25 10:11:17,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 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 10:11:17,988 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 250 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:17,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 65 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-25 10:11:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-25 10:11:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 114 states have internal predecessors, (167), 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 10:11:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 167 transitions. [2023-12-25 10:11:18,008 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 167 transitions. Word has length 47 [2023-12-25 10:11:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:18,009 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 167 transitions. [2023-12-25 10:11:18,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 10:11:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 167 transitions. [2023-12-25 10:11:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 10:11:18,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:18,012 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] [2023-12-25 10:11:18,017 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 10:11:18,214 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 10:11:18,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:18,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1253639727, now seen corresponding path program 1 times [2023-12-25 10:11:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864242490] [2023-12-25 10:11:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:18,216 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 10:11:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:18,218 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 10:11:18,223 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 10:11:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:18,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:18,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:18,338 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 10:11:18,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:18,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:18,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864242490] [2023-12-25 10:11:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864242490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:18,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:18,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605347059] [2023-12-25 10:11:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:18,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:18,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:18,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:18,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:18,352 INFO L87 Difference]: Start difference. First operand 115 states and 167 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 10:11:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:18,378 INFO L93 Difference]: Finished difference Result 279 states and 425 transitions. [2023-12-25 10:11:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:18,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2023-12-25 10:11:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:18,379 INFO L225 Difference]: With dead ends: 279 [2023-12-25 10:11:18,379 INFO L226 Difference]: Without dead ends: 189 [2023-12-25 10:11:18,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 10:11:18,381 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 63 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 233 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 10:11:18,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-25 10:11:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2023-12-25 10:11:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.5053763440860215) internal successors, (280), 186 states have internal predecessors, (280), 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 10:11:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 280 transitions. [2023-12-25 10:11:18,389 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 280 transitions. Word has length 47 [2023-12-25 10:11:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:18,390 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 280 transitions. [2023-12-25 10:11:18,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 10:11:18,390 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 280 transitions. [2023-12-25 10:11:18,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-25 10:11:18,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:18,391 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] [2023-12-25 10:11:18,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-25 10:11:18,596 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 10:11:18,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:18,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1697223251, now seen corresponding path program 1 times [2023-12-25 10:11:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:18,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299121746] [2023-12-25 10:11:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:18,598 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 10:11:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:18,600 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 10:11:18,605 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 10:11:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:18,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 10:11:18,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:18,959 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 10:11:18,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:18,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299121746] [2023-12-25 10:11:18,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299121746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 10:11:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849976751] [2023-12-25 10:11:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:18,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 10:11:18,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 10:11:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 10:11:18,961 INFO L87 Difference]: Start difference. First operand 187 states and 280 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 10:11:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:19,040 INFO L93 Difference]: Finished difference Result 349 states and 535 transitions. [2023-12-25 10:11:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 10:11:19,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2023-12-25 10:11:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:19,042 INFO L225 Difference]: With dead ends: 349 [2023-12-25 10:11:19,042 INFO L226 Difference]: Without dead ends: 187 [2023-12-25 10:11:19,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 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 10:11:19,043 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 163 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:19,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 73 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-25 10:11:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-12-25 10:11:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.4946236559139785) internal successors, (278), 186 states have internal predecessors, (278), 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 10:11:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 278 transitions. [2023-12-25 10:11:19,051 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 278 transitions. Word has length 48 [2023-12-25 10:11:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:19,051 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 278 transitions. [2023-12-25 10:11:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 10:11:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 278 transitions. [2023-12-25 10:11:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-25 10:11:19,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:19,052 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] [2023-12-25 10:11:19,056 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 (5)] Ended with exit code 0 [2023-12-25 10:11:19,255 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 10:11:19,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:19,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1732211656, now seen corresponding path program 1 times [2023-12-25 10:11:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332190128] [2023-12-25 10:11:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:19,257 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 10:11:19,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:19,258 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 10:11:19,259 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 10:11:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:19,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:19,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:19,359 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 10:11:19,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:19,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:19,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332190128] [2023-12-25 10:11:19,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332190128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:19,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:19,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:19,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475890119] [2023-12-25 10:11:19,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:19,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:19,361 INFO L87 Difference]: Start difference. First operand 187 states and 278 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 10:11:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:19,375 INFO L93 Difference]: Finished difference Result 479 states and 732 transitions. [2023-12-25 10:11:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:19,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2023-12-25 10:11:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:19,376 INFO L225 Difference]: With dead ends: 479 [2023-12-25 10:11:19,377 INFO L226 Difference]: Without dead ends: 317 [2023-12-25 10:11:19,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 10:11:19,378 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 57 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 227 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 10:11:19,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-25 10:11:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 315. [2023-12-25 10:11:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.5095541401273886) internal successors, (474), 314 states have internal predecessors, (474), 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 10:11:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 474 transitions. [2023-12-25 10:11:19,388 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 474 transitions. Word has length 48 [2023-12-25 10:11:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:19,388 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 474 transitions. [2023-12-25 10:11:19,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 10:11:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 474 transitions. [2023-12-25 10:11:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 10:11:19,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:19,389 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] [2023-12-25 10:11:19,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 10:11:19,591 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 10:11:19,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:19,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 775826581, now seen corresponding path program 1 times [2023-12-25 10:11:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:19,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427788730] [2023-12-25 10:11:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:19,593 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 10:11:19,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:19,594 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 10:11:19,599 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 10:11:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:19,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 10:11:19,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:19,909 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 10:11:19,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:19,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427788730] [2023-12-25 10:11:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427788730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:19,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:19,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 10:11:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574222227] [2023-12-25 10:11:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 10:11:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 10:11:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 10:11:19,911 INFO L87 Difference]: Start difference. First operand 315 states and 474 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 10:11:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:19,986 INFO L93 Difference]: Finished difference Result 605 states and 923 transitions. [2023-12-25 10:11:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 10:11:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2023-12-25 10:11:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:19,988 INFO L225 Difference]: With dead ends: 605 [2023-12-25 10:11:19,988 INFO L226 Difference]: Without dead ends: 315 [2023-12-25 10:11:19,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 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 10:11:19,989 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 152 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:19,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 81 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-25 10:11:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-25 10:11:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4968152866242037) internal successors, (470), 314 states have internal predecessors, (470), 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 10:11:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2023-12-25 10:11:19,997 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 49 [2023-12-25 10:11:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:19,997 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2023-12-25 10:11:19,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 10:11:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2023-12-25 10:11:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 10:11:19,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:19,998 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] [2023-12-25 10:11:20,003 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 (7)] Ended with exit code 0 [2023-12-25 10:11:20,200 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 10:11:20,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:20,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1547690234, now seen corresponding path program 1 times [2023-12-25 10:11:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:20,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465305678] [2023-12-25 10:11:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:20,202 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 10:11:20,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:20,203 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 10:11:20,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 10:11:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:20,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:20,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:20,299 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 10:11:20,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:20,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465305678] [2023-12-25 10:11:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465305678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49512674] [2023-12-25 10:11:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:20,301 INFO L87 Difference]: Start difference. First operand 315 states and 470 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 10:11:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:20,315 INFO L93 Difference]: Finished difference Result 831 states and 1256 transitions. [2023-12-25 10:11:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:20,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-12-25 10:11:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:20,318 INFO L225 Difference]: With dead ends: 831 [2023-12-25 10:11:20,318 INFO L226 Difference]: Without dead ends: 541 [2023-12-25 10:11:20,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 10:11:20,319 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 51 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 221 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 10:11:20,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 221 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-12-25 10:11:20,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2023-12-25 10:11:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.4907063197026023) internal successors, (802), 538 states have internal predecessors, (802), 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 10:11:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 802 transitions. [2023-12-25 10:11:20,330 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 802 transitions. Word has length 49 [2023-12-25 10:11:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:20,330 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 802 transitions. [2023-12-25 10:11:20,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 10:11:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 802 transitions. [2023-12-25 10:11:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 10:11:20,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:20,331 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] [2023-12-25 10:11:20,336 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 10:11:20,534 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 10:11:20,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:20,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash 619563823, now seen corresponding path program 1 times [2023-12-25 10:11:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993979811] [2023-12-25 10:11:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:20,535 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 10:11:20,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:20,536 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 10:11:20,562 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 10:11:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:20,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 10:11:20,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:20,947 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 10:11:20,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:20,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993979811] [2023-12-25 10:11:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993979811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:20,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:20,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 10:11:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354860925] [2023-12-25 10:11:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 10:11:20,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 10:11:20,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:20,954 INFO L87 Difference]: Start difference. First operand 539 states and 802 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 10:11:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:21,065 INFO L93 Difference]: Finished difference Result 3109 states and 4687 transitions. [2023-12-25 10:11:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 10:11:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2023-12-25 10:11:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:21,075 INFO L225 Difference]: With dead ends: 3109 [2023-12-25 10:11:21,075 INFO L226 Difference]: Without dead ends: 2595 [2023-12-25 10:11:21,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:21,080 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 484 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:21,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 413 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2023-12-25 10:11:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 1563. [2023-12-25 10:11:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.4763124199743918) internal successors, (2306), 1562 states have internal predecessors, (2306), 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 10:11:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2306 transitions. [2023-12-25 10:11:21,139 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2306 transitions. Word has length 50 [2023-12-25 10:11:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:21,140 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2306 transitions. [2023-12-25 10:11:21,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 10:11:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2306 transitions. [2023-12-25 10:11:21,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 10:11:21,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:21,140 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] [2023-12-25 10:11:21,146 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 10:11:21,343 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 10:11:21,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:21,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1773524939, now seen corresponding path program 1 times [2023-12-25 10:11:21,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:21,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302585100] [2023-12-25 10:11:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:21,345 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 10:11:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:21,346 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 10:11:21,347 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 10:11:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:21,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:21,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:21,487 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 10:11:21,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:21,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302585100] [2023-12-25 10:11:21,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302585100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617339754] [2023-12-25 10:11:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:21,489 INFO L87 Difference]: Start difference. First operand 1563 states and 2306 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 10:11:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:21,519 INFO L93 Difference]: Finished difference Result 3841 states and 5662 transitions. [2023-12-25 10:11:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2023-12-25 10:11:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:21,527 INFO L225 Difference]: With dead ends: 3841 [2023-12-25 10:11:21,527 INFO L226 Difference]: Without dead ends: 2303 [2023-12-25 10:11:21,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 10:11:21,530 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 42 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:21,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 194 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2023-12-25 10:11:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2301. [2023-12-25 10:11:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.4521739130434783) internal successors, (3340), 2300 states have internal predecessors, (3340), 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 10:11:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3340 transitions. [2023-12-25 10:11:21,567 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3340 transitions. Word has length 52 [2023-12-25 10:11:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:21,567 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3340 transitions. [2023-12-25 10:11:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 10:11:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3340 transitions. [2023-12-25 10:11:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 10:11:21,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:21,568 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] [2023-12-25 10:11:21,571 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 (10)] Ended with exit code 0 [2023-12-25 10:11:21,771 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 10:11:21,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:21,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -206128826, now seen corresponding path program 1 times [2023-12-25 10:11:21,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:21,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795752171] [2023-12-25 10:11:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:21,772 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 10:11:21,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:21,773 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 10:11:21,777 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 10:11:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:21,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 10:11:21,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:21,859 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 10:11:21,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:21,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:21,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795752171] [2023-12-25 10:11:21,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795752171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:21,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:21,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 10:11:21,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071561441] [2023-12-25 10:11:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:21,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 10:11:21,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 10:11:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 10:11:21,860 INFO L87 Difference]: Start difference. First operand 2301 states and 3340 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 10:11:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:21,909 INFO L93 Difference]: Finished difference Result 4265 states and 6164 transitions. [2023-12-25 10:11:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 10:11:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2023-12-25 10:11:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:21,924 INFO L225 Difference]: With dead ends: 4265 [2023-12-25 10:11:21,924 INFO L226 Difference]: Without dead ends: 4263 [2023-12-25 10:11:21,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 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 10:11:21,928 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 136 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:21,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 326 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2023-12-25 10:11:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 2413. [2023-12-25 10:11:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 1.427860696517413) internal successors, (3444), 2412 states have internal predecessors, (3444), 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 10:11:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3444 transitions. [2023-12-25 10:11:21,987 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3444 transitions. Word has length 53 [2023-12-25 10:11:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:21,987 INFO L495 AbstractCegarLoop]: Abstraction has 2413 states and 3444 transitions. [2023-12-25 10:11:21,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 10:11:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3444 transitions. [2023-12-25 10:11:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 10:11:21,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:21,990 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-25 10:11:21,996 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 10:11:22,195 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 10:11:22,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:22,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -664699894, now seen corresponding path program 1 times [2023-12-25 10:11:22,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:22,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683722567] [2023-12-25 10:11:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:22,197 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 10:11:22,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:22,198 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 10:11:22,200 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 10:11:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:22,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 10:11:22,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:22,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:11:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:23,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:23,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683722567] [2023-12-25 10:11:23,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683722567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:11:23,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:11:23,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 10:11:23,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041035054] [2023-12-25 10:11:23,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:11:23,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 10:11:23,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 10:11:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 10:11:23,164 INFO L87 Difference]: Start difference. First operand 2413 states and 3444 transitions. Second operand has 16 states, 16 states have (on average 8.5) internal successors, (136), 15 states have internal predecessors, (136), 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 10:11:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:26,734 INFO L93 Difference]: Finished difference Result 11704 states and 16514 transitions. [2023-12-25 10:11:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-25 10:11:26,735 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 15 states have internal predecessors, (136), 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 10:11:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:26,765 INFO L225 Difference]: With dead ends: 11704 [2023-12-25 10:11:26,765 INFO L226 Difference]: Without dead ends: 9318 [2023-12-25 10:11:26,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1207, Invalid=3485, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 10:11:26,772 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2569 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:26,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 797 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 10:11:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2023-12-25 10:11:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 2497. [2023-12-25 10:11:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2496 states have (on average 1.4134615384615385) internal successors, (3528), 2496 states have internal predecessors, (3528), 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 10:11:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3528 transitions. [2023-12-25 10:11:26,875 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3528 transitions. Word has length 75 [2023-12-25 10:11:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:26,875 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 3528 transitions. [2023-12-25 10:11:26,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 15 states have internal predecessors, (136), 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 10:11:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3528 transitions. [2023-12-25 10:11:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 10:11:26,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:26,879 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-25 10:11:26,887 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 10:11:27,082 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 10:11:27,082 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:27,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2093196528, now seen corresponding path program 1 times [2023-12-25 10:11:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688129143] [2023-12-25 10:11:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:27,084 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 10:11:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:27,084 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 10:11:27,085 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 10:11:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:27,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 10:11:27,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:27,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:11:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:27,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:27,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688129143] [2023-12-25 10:11:27,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688129143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:11:27,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:11:27,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 10:11:27,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333703339] [2023-12-25 10:11:27,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:11:27,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 10:11:27,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:27,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 10:11:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 10:11:27,825 INFO L87 Difference]: Start difference. First operand 2497 states and 3528 transitions. Second operand has 16 states, 16 states have (on average 8.125) internal successors, (130), 15 states have internal predecessors, (130), 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 10:11:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:29,797 INFO L93 Difference]: Finished difference Result 8707 states and 12215 transitions. [2023-12-25 10:11:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-25 10:11:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 15 states have internal predecessors, (130), 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 10:11:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:29,815 INFO L225 Difference]: With dead ends: 8707 [2023-12-25 10:11:29,815 INFO L226 Difference]: Without dead ends: 6237 [2023-12-25 10:11:29,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=638, Invalid=1912, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 10:11:29,821 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2145 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:29,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 689 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 10:11:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2023-12-25 10:11:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 2497. [2023-12-25 10:11:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2496 states have (on average 1.3942307692307692) internal successors, (3480), 2496 states have internal predecessors, (3480), 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 10:11:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3480 transitions. [2023-12-25 10:11:29,880 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3480 transitions. Word has length 75 [2023-12-25 10:11:29,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:29,880 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 3480 transitions. [2023-12-25 10:11:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 15 states have internal predecessors, (130), 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 10:11:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3480 transitions. [2023-12-25 10:11:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 10:11:29,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:29,881 INFO L195 NwaCegarLoop]: trace histogram [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 10:11:29,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 10:11:30,084 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 10:11:30,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:30,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1071197763, now seen corresponding path program 1 times [2023-12-25 10:11:30,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:30,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655965493] [2023-12-25 10:11:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:30,085 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 10:11:30,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:30,088 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 10:11:30,115 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 10:11:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:30,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:30,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:30,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:30,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655965493] [2023-12-25 10:11:30,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655965493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:30,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:30,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239244142] [2023-12-25 10:11:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:30,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:30,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:30,203 INFO L87 Difference]: Start difference. First operand 2497 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:11:30,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:30,253 INFO L93 Difference]: Finished difference Result 4969 states and 6934 transitions. [2023-12-25 10:11:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:30,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2023-12-25 10:11:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:30,270 INFO L225 Difference]: With dead ends: 4969 [2023-12-25 10:11:30,270 INFO L226 Difference]: Without dead ends: 2499 [2023-12-25 10:11:30,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 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 10:11:30,273 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 44 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:30,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 219 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2023-12-25 10:11:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2497. [2023-12-25 10:11:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2496 states have (on average 1.375) internal successors, (3432), 2496 states have internal predecessors, (3432), 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 10:11:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3432 transitions. [2023-12-25 10:11:30,318 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3432 transitions. Word has length 76 [2023-12-25 10:11:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:30,319 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 3432 transitions. [2023-12-25 10:11:30,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:11:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3432 transitions. [2023-12-25 10:11:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 10:11:30,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:30,321 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-25 10:11:30,326 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 (14)] Ended with exit code 0 [2023-12-25 10:11:30,524 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 10:11:30,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:30,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash 232469181, now seen corresponding path program 1 times [2023-12-25 10:11:30,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:30,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305185782] [2023-12-25 10:11:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:30,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 10:11:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:30,526 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 10:11:30,529 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 10:11:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:30,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 10:11:30,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:31,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:11:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:31,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305185782] [2023-12-25 10:11:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305185782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:11:31,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:11:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 10:11:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484592717] [2023-12-25 10:11:31,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:11:31,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 10:11:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 10:11:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 10:11:31,339 INFO L87 Difference]: Start difference. First operand 2497 states and 3432 transitions. Second operand has 16 states, 16 states have (on average 8.875) internal successors, (142), 15 states have internal predecessors, (142), 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 10:11:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:32,812 INFO L93 Difference]: Finished difference Result 8612 states and 11803 transitions. [2023-12-25 10:11:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 10:11:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.875) internal successors, (142), 15 states have internal predecessors, (142), 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 76 [2023-12-25 10:11:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:32,820 INFO L225 Difference]: With dead ends: 8612 [2023-12-25 10:11:32,820 INFO L226 Difference]: Without dead ends: 6142 [2023-12-25 10:11:32,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=412, Invalid=1148, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 10:11:32,824 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1890 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:32,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 783 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 10:11:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2023-12-25 10:11:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 2497. [2023-12-25 10:11:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2496 states have (on average 1.3677884615384615) internal successors, (3414), 2496 states have internal predecessors, (3414), 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 10:11:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3414 transitions. [2023-12-25 10:11:32,879 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3414 transitions. Word has length 76 [2023-12-25 10:11:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:32,879 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 3414 transitions. [2023-12-25 10:11:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.875) internal successors, (142), 15 states have internal predecessors, (142), 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 10:11:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3414 transitions. [2023-12-25 10:11:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 10:11:32,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:32,880 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 10:11:32,884 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 10:11:33,083 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 10:11:33,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1971713259, now seen corresponding path program 1 times [2023-12-25 10:11:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145733639] [2023-12-25 10:11:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:33,084 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 10:11:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:33,086 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 10:11:33,118 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 10:11:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:33,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:33,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:33,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:33,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145733639] [2023-12-25 10:11:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145733639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:33,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:33,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057289871] [2023-12-25 10:11:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:33,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:33,216 INFO L87 Difference]: Start difference. First operand 2497 states and 3414 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 10:11:33,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:33,231 INFO L93 Difference]: Finished difference Result 3735 states and 5100 transitions. [2023-12-25 10:11:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:33,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 10:11:33,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:33,233 INFO L225 Difference]: With dead ends: 3735 [2023-12-25 10:11:33,233 INFO L226 Difference]: Without dead ends: 1265 [2023-12-25 10:11:33,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 10:11:33,235 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 37 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:33,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2023-12-25 10:11:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1263. [2023-12-25 10:11:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.3423137876386688) internal successors, (1694), 1262 states have internal predecessors, (1694), 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 10:11:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1694 transitions. [2023-12-25 10:11:33,249 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1694 transitions. Word has length 77 [2023-12-25 10:11:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:33,249 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1694 transitions. [2023-12-25 10:11:33,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 10:11:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1694 transitions. [2023-12-25 10:11:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 10:11:33,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:33,250 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:33,259 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 10:11:33,459 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 10:11:33,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:33,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1003371883, now seen corresponding path program 1 times [2023-12-25 10:11:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196433782] [2023-12-25 10:11:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:33,460 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 10:11:33,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:33,461 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 10:11:33,463 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 10:11:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:33,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 10:11:33,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:33,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:11:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:34,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196433782] [2023-12-25 10:11:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196433782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:11:34,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:11:34,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 10:11:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845572914] [2023-12-25 10:11:34,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:11:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 10:11:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 10:11:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 10:11:34,216 INFO L87 Difference]: Start difference. First operand 1263 states and 1694 transitions. Second operand has 16 states, 16 states have (on average 9.25) internal successors, (148), 15 states have internal predecessors, (148), 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 10:11:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:35,541 INFO L93 Difference]: Finished difference Result 4341 states and 5820 transitions. [2023-12-25 10:11:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 10:11:35,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.25) internal successors, (148), 15 states have internal predecessors, (148), 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 10:11:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:35,545 INFO L225 Difference]: With dead ends: 4341 [2023-12-25 10:11:35,545 INFO L226 Difference]: Without dead ends: 3105 [2023-12-25 10:11:35,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=412, Invalid=1148, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 10:11:35,548 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1157 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:35,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 816 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 10:11:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2023-12-25 10:11:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 1263. [2023-12-25 10:11:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.3351822503961965) internal successors, (1685), 1262 states have internal predecessors, (1685), 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 10:11:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1685 transitions. [2023-12-25 10:11:35,568 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1685 transitions. Word has length 77 [2023-12-25 10:11:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:35,568 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1685 transitions. [2023-12-25 10:11:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.25) internal successors, (148), 15 states have internal predecessors, (148), 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 10:11:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1685 transitions. [2023-12-25 10:11:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 10:11:35,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:35,569 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 10:11:35,576 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 10:11:35,772 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 10:11:35,773 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:35,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1153950476, now seen corresponding path program 1 times [2023-12-25 10:11:35,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626719934] [2023-12-25 10:11:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:35,774 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 10:11:35,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:35,774 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 10:11:35,775 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 10:11:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:35,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:11:35,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:35,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:35,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626719934] [2023-12-25 10:11:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626719934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:11:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691449794] [2023-12-25 10:11:35,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:35,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:11:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:11:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:11:35,874 INFO L87 Difference]: Start difference. First operand 1263 states and 1685 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 10:11:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:35,883 INFO L93 Difference]: Finished difference Result 1884 states and 2511 transitions. [2023-12-25 10:11:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:11:35,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 10:11:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:35,884 INFO L225 Difference]: With dead ends: 1884 [2023-12-25 10:11:35,884 INFO L226 Difference]: Without dead ends: 648 [2023-12-25 10:11:35,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 10:11:35,886 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 29 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:35,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 186 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:11:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-12-25 10:11:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2023-12-25 10:11:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.3069767441860465) internal successors, (843), 645 states have internal predecessors, (843), 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 10:11:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 843 transitions. [2023-12-25 10:11:35,896 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 843 transitions. Word has length 78 [2023-12-25 10:11:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:35,897 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 843 transitions. [2023-12-25 10:11:35,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 10:11:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 843 transitions. [2023-12-25 10:11:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 10:11:35,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:35,898 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:35,904 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 10:11:36,101 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 10:11:36,102 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:36,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1592677644, now seen corresponding path program 1 times [2023-12-25 10:11:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054413964] [2023-12-25 10:11:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:36,103 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 10:11:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:36,104 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 10:11:36,117 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 10:11:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:36,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 10:11:36,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 10:11:36,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:36,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:36,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054413964] [2023-12-25 10:11:36,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054413964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:36,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:36,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 10:11:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883822648] [2023-12-25 10:11:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:36,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 10:11:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 10:11:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:36,524 INFO L87 Difference]: Start difference. First operand 646 states and 843 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 10:11:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:36,610 INFO L93 Difference]: Finished difference Result 1499 states and 1976 transitions. [2023-12-25 10:11:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 10:11:36,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 78 [2023-12-25 10:11:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:36,613 INFO L225 Difference]: With dead ends: 1499 [2023-12-25 10:11:36,613 INFO L226 Difference]: Without dead ends: 1354 [2023-12-25 10:11:36,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:36,614 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 269 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:36,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 510 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-12-25 10:11:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 994. [2023-12-25 10:11:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 993 states have (on average 1.2950654582074521) internal successors, (1286), 993 states have internal predecessors, (1286), 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 10:11:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1286 transitions. [2023-12-25 10:11:36,632 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1286 transitions. Word has length 78 [2023-12-25 10:11:36,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:36,632 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1286 transitions. [2023-12-25 10:11:36,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 10:11:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1286 transitions. [2023-12-25 10:11:36,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 10:11:36,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:36,633 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:36,642 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 (19)] Ended with exit code 0 [2023-12-25 10:11:36,836 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 10:11:36,837 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:36,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 920289940, now seen corresponding path program 1 times [2023-12-25 10:11:36,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023326972] [2023-12-25 10:11:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:36,837 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 10:11:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:36,838 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 10:11:36,839 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 10:11:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:36,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 10:11:36,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 10:11:37,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:37,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023326972] [2023-12-25 10:11:37,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023326972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:37,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:37,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 10:11:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927013755] [2023-12-25 10:11:37,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 10:11:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 10:11:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:37,286 INFO L87 Difference]: Start difference. First operand 994 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 10:11:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:37,361 INFO L93 Difference]: Finished difference Result 1768 states and 2324 transitions. [2023-12-25 10:11:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 10:11:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 78 [2023-12-25 10:11:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:37,363 INFO L225 Difference]: With dead ends: 1768 [2023-12-25 10:11:37,363 INFO L226 Difference]: Without dead ends: 1557 [2023-12-25 10:11:37,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:37,364 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 257 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:37,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 485 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2023-12-25 10:11:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1197. [2023-12-25 10:11:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 1.2918060200668897) internal successors, (1545), 1196 states have internal predecessors, (1545), 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 10:11:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1545 transitions. [2023-12-25 10:11:37,379 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1545 transitions. Word has length 78 [2023-12-25 10:11:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:37,380 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1545 transitions. [2023-12-25 10:11:37,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 10:11:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1545 transitions. [2023-12-25 10:11:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 10:11:37,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:37,381 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:37,388 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 10:11:37,583 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 10:11:37,584 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:37,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -358564233, now seen corresponding path program 1 times [2023-12-25 10:11:37,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641787429] [2023-12-25 10:11:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:37,585 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 10:11:37,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:37,585 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 10:11:37,587 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 10:11:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:37,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 10:11:37,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 10:11:38,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:38,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:38,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641787429] [2023-12-25 10:11:38,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641787429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:38,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:38,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 10:11:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148771359] [2023-12-25 10:11:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:38,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 10:11:38,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 10:11:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:38,029 INFO L87 Difference]: Start difference. First operand 1197 states and 1545 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 10:11:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:38,113 INFO L93 Difference]: Finished difference Result 1971 states and 2583 transitions. [2023-12-25 10:11:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 10:11:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 10:11:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:38,115 INFO L225 Difference]: With dead ends: 1971 [2023-12-25 10:11:38,115 INFO L226 Difference]: Without dead ends: 1352 [2023-12-25 10:11:38,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:38,116 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 239 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:38,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 556 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-12-25 10:11:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 992. [2023-12-25 10:11:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.2815338042381432) internal successors, (1270), 991 states have internal predecessors, (1270), 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 10:11:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1270 transitions. [2023-12-25 10:11:38,127 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1270 transitions. Word has length 78 [2023-12-25 10:11:38,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:38,128 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1270 transitions. [2023-12-25 10:11:38,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 10:11:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1270 transitions. [2023-12-25 10:11:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 10:11:38,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:38,129 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:38,132 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 10:11:38,332 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 10:11:38,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:38,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash -391853545, now seen corresponding path program 1 times [2023-12-25 10:11:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334635931] [2023-12-25 10:11:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:38,333 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 10:11:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:38,334 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 10:11:38,334 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 10:11:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:38,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 10:11:38,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 10:11:38,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:11:38,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:38,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334635931] [2023-12-25 10:11:38,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334635931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:11:38,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:11:38,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 10:11:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087967688] [2023-12-25 10:11:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:11:38,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 10:11:38,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 10:11:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:38,753 INFO L87 Difference]: Start difference. First operand 992 states and 1270 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:11:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:38,818 INFO L93 Difference]: Finished difference Result 1766 states and 2308 transitions. [2023-12-25 10:11:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 10:11:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:11:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:38,819 INFO L225 Difference]: With dead ends: 1766 [2023-12-25 10:11:38,819 INFO L226 Difference]: Without dead ends: 1555 [2023-12-25 10:11:38,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:11:38,820 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 261 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:38,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 492 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 10:11:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-12-25 10:11:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1195. [2023-12-25 10:11:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 1.280569514237856) internal successors, (1529), 1194 states have internal predecessors, (1529), 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 10:11:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1529 transitions. [2023-12-25 10:11:38,833 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1529 transitions. Word has length 78 [2023-12-25 10:11:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:38,833 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1529 transitions. [2023-12-25 10:11:38,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:11:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1529 transitions. [2023-12-25 10:11:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 10:11:38,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:38,834 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:38,845 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 10:11:39,037 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 10:11:39,037 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:39,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 417784290, now seen corresponding path program 1 times [2023-12-25 10:11:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:39,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641213553] [2023-12-25 10:11:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:39,038 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 10:11:39,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:39,038 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 10:11:39,039 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 10:11:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:39,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 10:11:39,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:39,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:11:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:39,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641213553] [2023-12-25 10:11:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641213553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:11:39,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:11:39,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-12-25 10:11:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369662146] [2023-12-25 10:11:39,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:11:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 10:11:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 10:11:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-25 10:11:39,692 INFO L87 Difference]: Start difference. First operand 1195 states and 1529 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 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 10:11:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:11:40,745 INFO L93 Difference]: Finished difference Result 6003 states and 7595 transitions. [2023-12-25 10:11:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 10:11:40,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 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 10:11:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:11:40,753 INFO L225 Difference]: With dead ends: 6003 [2023-12-25 10:11:40,753 INFO L226 Difference]: Without dead ends: 5715 [2023-12-25 10:11:40,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 10:11:40,756 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1591 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 10:11:40,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 1425 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 10:11:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2023-12-25 10:11:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 2506. [2023-12-25 10:11:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.2850299401197605) internal successors, (3219), 2505 states have internal predecessors, (3219), 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 10:11:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3219 transitions. [2023-12-25 10:11:40,811 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3219 transitions. Word has length 79 [2023-12-25 10:11:40,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:11:40,811 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 3219 transitions. [2023-12-25 10:11:40,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 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 10:11:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3219 transitions. [2023-12-25 10:11:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 10:11:40,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:11:40,813 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:11:40,820 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 10:11:41,016 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 10:11:41,017 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:11:41,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:11:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash -268486107, now seen corresponding path program 1 times [2023-12-25 10:11:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:11:41,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711764383] [2023-12-25 10:11:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:11:41,017 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 10:11:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:11:41,018 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 10:11:41,019 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 10:11:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:11:41,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 10:11:41,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:11:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:44,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:11:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:11:45,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:11:45,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711764383] [2023-12-25 10:11:45,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711764383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:11:45,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:11:45,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 49 [2023-12-25 10:11:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915287342] [2023-12-25 10:11:45,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:11:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-25 10:11:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:11:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-25 10:11:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2020, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 10:11:45,992 INFO L87 Difference]: Start difference. First operand 2506 states and 3219 transitions. Second operand has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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 10:13:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:34,696 INFO L93 Difference]: Finished difference Result 56879 states and 71187 transitions. [2023-12-25 10:13:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 513 states. [2023-12-25 10:13:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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 10:13:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:34,763 INFO L225 Difference]: With dead ends: 56879 [2023-12-25 10:13:34,763 INFO L226 Difference]: Without dead ends: 55698 [2023-12-25 10:13:34,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 546 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137477 ImplicationChecksByTransitivity, 98.7s TimeCoverageRelationStatistics Valid=36992, Invalid=262764, Unknown=0, NotChecked=0, Total=299756 [2023-12-25 10:13:34,810 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 14071 mSDsluCounter, 8288 mSDsCounter, 0 mSdLazyCounter, 6098 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14071 SdHoareTripleChecker+Valid, 8695 SdHoareTripleChecker+Invalid, 6464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 6098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:34,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14071 Valid, 8695 Invalid, 6464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [366 Valid, 6098 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-25 10:13:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55698 states. [2023-12-25 10:13:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55698 to 10182. [2023-12-25 10:13:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10182 states, 10181 states have (on average 1.2817994303113642) internal successors, (13050), 10181 states have internal predecessors, (13050), 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 10:13:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10182 states to 10182 states and 13050 transitions. [2023-12-25 10:13:35,278 INFO L78 Accepts]: Start accepts. Automaton has 10182 states and 13050 transitions. Word has length 79 [2023-12-25 10:13:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:35,279 INFO L495 AbstractCegarLoop]: Abstraction has 10182 states and 13050 transitions. [2023-12-25 10:13:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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 10:13:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 10182 states and 13050 transitions. [2023-12-25 10:13:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 10:13:35,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:35,281 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:13:35,287 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 10:13:35,485 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 10:13:35,485 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:35,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1011374305, now seen corresponding path program 1 times [2023-12-25 10:13:35,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:35,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519214170] [2023-12-25 10:13:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:35,486 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 10:13:35,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:35,487 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 10:13:35,488 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 10:13:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:35,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 10:13:35,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:13:36,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:13:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:13:37,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:37,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519214170] [2023-12-25 10:13:37,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519214170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:13:37,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:13:37,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2023-12-25 10:13:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331356855] [2023-12-25 10:13:37,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:13:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 10:13:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 10:13:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-12-25 10:13:37,381 INFO L87 Difference]: Start difference. First operand 10182 states and 13050 transitions. Second operand has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 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 10:13:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:49,659 INFO L93 Difference]: Finished difference Result 86334 states and 109704 transitions. [2023-12-25 10:13:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-25 10:13:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 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 10:13:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:49,734 INFO L225 Difference]: With dead ends: 86334 [2023-12-25 10:13:49,734 INFO L226 Difference]: Without dead ends: 80950 [2023-12-25 10:13:49,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18147 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=7754, Invalid=34888, Unknown=0, NotChecked=0, Total=42642 [2023-12-25 10:13:49,757 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 10211 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10211 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:49,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10211 Valid, 2705 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 10:13:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80950 states. [2023-12-25 10:13:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80950 to 23513. [2023-12-25 10:13:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 23512 states have (on average 1.272839401156856) internal successors, (29927), 23512 states have internal predecessors, (29927), 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 10:13:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 29927 transitions. [2023-12-25 10:13:50,358 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 29927 transitions. Word has length 79 [2023-12-25 10:13:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:50,358 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 29927 transitions. [2023-12-25 10:13:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 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 10:13:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 29927 transitions. [2023-12-25 10:13:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 10:13:50,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:50,363 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:13:50,366 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 (25)] Forceful destruction successful, exit code 0 [2023-12-25 10:13:50,566 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 10:13:50,567 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:50,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1880489777, now seen corresponding path program 1 times [2023-12-25 10:13:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491097051] [2023-12-25 10:13:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:50,568 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 10:13:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:50,569 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 10:13:50,577 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 10:13:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:50,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 10:13:50,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 10:13:50,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:13:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 10:13:50,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491097051] [2023-12-25 10:13:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491097051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:13:50,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:13:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-25 10:13:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43308759] [2023-12-25 10:13:50,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:13:50,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 10:13:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 10:13:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 10:13:50,808 INFO L87 Difference]: Start difference. First operand 23513 states and 29927 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 10:13:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:50,977 INFO L93 Difference]: Finished difference Result 86928 states and 111271 transitions. [2023-12-25 10:13:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 10:13:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 10:13:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:51,045 INFO L225 Difference]: With dead ends: 86928 [2023-12-25 10:13:51,045 INFO L226 Difference]: Without dead ends: 69250 [2023-12-25 10:13:51,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-25 10:13:51,072 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 218 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:51,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 445 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:13:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69250 states. [2023-12-25 10:13:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69250 to 69242. [2023-12-25 10:13:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69242 states, 69241 states have (on average 1.2499241778714922) internal successors, (86546), 69241 states have internal predecessors, (86546), 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 10:13:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69242 states to 69242 states and 86546 transitions. [2023-12-25 10:13:52,011 INFO L78 Accepts]: Start accepts. Automaton has 69242 states and 86546 transitions. Word has length 80 [2023-12-25 10:13:52,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:52,011 INFO L495 AbstractCegarLoop]: Abstraction has 69242 states and 86546 transitions. [2023-12-25 10:13:52,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 10:13:52,012 INFO L276 IsEmpty]: Start isEmpty. Operand 69242 states and 86546 transitions. [2023-12-25 10:13:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 10:13:52,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:52,015 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:13:52,020 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 (26)] Forceful destruction successful, exit code 0 [2023-12-25 10:13:52,218 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 10:13:52,218 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:52,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1212828788, now seen corresponding path program 1 times [2023-12-25 10:13:52,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:52,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140573296] [2023-12-25 10:13:52,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:52,219 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 10:13:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:52,220 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 10:13:52,223 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 10:13:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:52,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:13:52,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 10:13:52,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:13:52,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:52,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140573296] [2023-12-25 10:13:52,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140573296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:13:52,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:13:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:13:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335081960] [2023-12-25 10:13:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:13:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:13:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:13:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:13:52,314 INFO L87 Difference]: Start difference. First operand 69242 states and 86546 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:13:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:52,595 INFO L93 Difference]: Finished difference Result 125038 states and 156272 transitions. [2023-12-25 10:13:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:13:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:13:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:52,959 INFO L225 Difference]: With dead ends: 125038 [2023-12-25 10:13:52,959 INFO L226 Difference]: Without dead ends: 55823 [2023-12-25 10:13:53,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 10:13:53,064 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:53,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 107 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:13:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55823 states. [2023-12-25 10:13:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55823 to 55823. [2023-12-25 10:13:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55823 states, 55822 states have (on average 1.2356418616316147) internal successors, (68976), 55822 states have internal predecessors, (68976), 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 10:13:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55823 states to 55823 states and 68976 transitions. [2023-12-25 10:13:54,135 INFO L78 Accepts]: Start accepts. Automaton has 55823 states and 68976 transitions. Word has length 80 [2023-12-25 10:13:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:54,135 INFO L495 AbstractCegarLoop]: Abstraction has 55823 states and 68976 transitions. [2023-12-25 10:13:54,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:13:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 55823 states and 68976 transitions. [2023-12-25 10:13:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 10:13:54,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:54,138 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 10:13:54,143 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 10:13:54,340 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 10:13:54,340 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:54,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 377822911, now seen corresponding path program 1 times [2023-12-25 10:13:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:54,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813259337] [2023-12-25 10:13:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:54,342 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 10:13:54,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:54,343 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 10:13:54,345 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 10:13:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:54,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:13:54,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-25 10:13:54,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:13:54,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813259337] [2023-12-25 10:13:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813259337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:13:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:13:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:13:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724125291] [2023-12-25 10:13:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:13:54,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:13:54,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:13:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:13:54,421 INFO L87 Difference]: Start difference. First operand 55823 states and 68976 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 10:13:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:54,682 INFO L93 Difference]: Finished difference Result 97257 states and 120536 transitions. [2023-12-25 10:13:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:13:54,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 80 [2023-12-25 10:13:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:54,726 INFO L225 Difference]: With dead ends: 97257 [2023-12-25 10:13:54,726 INFO L226 Difference]: Without dead ends: 41461 [2023-12-25 10:13:54,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 10:13:54,756 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 63 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:54,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 136 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:13:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41461 states. [2023-12-25 10:13:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41461 to 39495. [2023-12-25 10:13:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39495 states, 39494 states have (on average 1.2251228034638173) internal successors, (48385), 39494 states have internal predecessors, (48385), 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 10:13:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39495 states to 39495 states and 48385 transitions. [2023-12-25 10:13:55,198 INFO L78 Accepts]: Start accepts. Automaton has 39495 states and 48385 transitions. Word has length 80 [2023-12-25 10:13:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:55,199 INFO L495 AbstractCegarLoop]: Abstraction has 39495 states and 48385 transitions. [2023-12-25 10:13:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 10:13:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 39495 states and 48385 transitions. [2023-12-25 10:13:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-25 10:13:55,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:55,200 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-25 10:13:55,204 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 (28)] Forceful destruction successful, exit code 0 [2023-12-25 10:13:55,403 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 10:13:55,403 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:55,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1148519127, now seen corresponding path program 1 times [2023-12-25 10:13:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:55,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129378935] [2023-12-25 10:13:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:55,404 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 10:13:55,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:55,405 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 10:13:55,405 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 10:13:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:55,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:13:55,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-25 10:13:55,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:13:55,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129378935] [2023-12-25 10:13:55,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129378935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:13:55,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:13:55,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:13:55,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990582289] [2023-12-25 10:13:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:13:55,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:13:55,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:13:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:13:55,490 INFO L87 Difference]: Start difference. First operand 39495 states and 48385 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:13:55,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:55,746 INFO L93 Difference]: Finished difference Result 75433 states and 92554 transitions. [2023-12-25 10:13:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:13:55,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 81 [2023-12-25 10:13:55,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:55,781 INFO L225 Difference]: With dead ends: 75433 [2023-12-25 10:13:55,782 INFO L226 Difference]: Without dead ends: 35965 [2023-12-25 10:13:55,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 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 10:13:55,805 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 46 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:55,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 98 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:13:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35965 states. [2023-12-25 10:13:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35965 to 35965. [2023-12-25 10:13:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35965 states, 35964 states have (on average 1.2148259370481593) internal successors, (43690), 35964 states have internal predecessors, (43690), 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 10:13:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35965 states to 35965 states and 43690 transitions. [2023-12-25 10:13:56,181 INFO L78 Accepts]: Start accepts. Automaton has 35965 states and 43690 transitions. Word has length 81 [2023-12-25 10:13:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:56,181 INFO L495 AbstractCegarLoop]: Abstraction has 35965 states and 43690 transitions. [2023-12-25 10:13:56,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 10:13:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 35965 states and 43690 transitions. [2023-12-25 10:13:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-25 10:13:56,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:56,182 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-25 10:13:56,185 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 (29)] Forceful destruction successful, exit code 0 [2023-12-25 10:13:56,385 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 10:13:56,385 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:56,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:56,386 INFO L85 PathProgramCache]: Analyzing trace with hash -345808623, now seen corresponding path program 1 times [2023-12-25 10:13:56,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:56,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999115518] [2023-12-25 10:13:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:56,386 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 10:13:56,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:56,387 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 10:13:56,388 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 10:13:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:56,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:13:56,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 10:13:56,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:13:56,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:56,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999115518] [2023-12-25 10:13:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999115518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:13:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:13:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:13:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813089406] [2023-12-25 10:13:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:13:56,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:13:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:13:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:13:56,478 INFO L87 Difference]: Start difference. First operand 35965 states and 43690 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 10:13:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:56,741 INFO L93 Difference]: Finished difference Result 69118 states and 83873 transitions. [2023-12-25 10:13:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:13:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 81 [2023-12-25 10:13:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:56,779 INFO L225 Difference]: With dead ends: 69118 [2023-12-25 10:13:56,779 INFO L226 Difference]: Without dead ends: 33180 [2023-12-25 10:13:56,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 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 10:13:56,795 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 45 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:56,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 90 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:13:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33180 states. [2023-12-25 10:13:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33180 to 33180. [2023-12-25 10:13:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33180 states, 33179 states have (on average 1.1966605382922932) internal successors, (39704), 33179 states have internal predecessors, (39704), 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 10:13:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33180 states to 33180 states and 39704 transitions. [2023-12-25 10:13:57,192 INFO L78 Accepts]: Start accepts. Automaton has 33180 states and 39704 transitions. Word has length 81 [2023-12-25 10:13:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:57,192 INFO L495 AbstractCegarLoop]: Abstraction has 33180 states and 39704 transitions. [2023-12-25 10:13:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 10:13:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 33180 states and 39704 transitions. [2023-12-25 10:13:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-25 10:13:57,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:57,193 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:57,202 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 (30)] Forceful destruction successful, exit code 0 [2023-12-25 10:13:57,396 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 10:13:57,396 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:57,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:57,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1221725054, now seen corresponding path program 1 times [2023-12-25 10:13:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211040604] [2023-12-25 10:13:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:57,397 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 10:13:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:57,398 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 10:13:57,399 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 10:13:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:57,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 10:13:57,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 10:13:57,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 10:13:57,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:13:57,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211040604] [2023-12-25 10:13:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211040604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 10:13:57,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 10:13:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 10:13:57,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639794996] [2023-12-25 10:13:57,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 10:13:57,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 10:13:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:13:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 10:13:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 10:13:57,526 INFO L87 Difference]: Start difference. First operand 33180 states and 39704 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 10:13:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:13:57,598 INFO L93 Difference]: Finished difference Result 41028 states and 48980 transitions. [2023-12-25 10:13:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 10:13:57,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2023-12-25 10:13:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:13:57,604 INFO L225 Difference]: With dead ends: 41028 [2023-12-25 10:13:57,604 INFO L226 Difference]: Without dead ends: 7875 [2023-12-25 10:13:57,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 10:13:57,616 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:13:57,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 10:13:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2023-12-25 10:13:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 7717. [2023-12-25 10:13:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7717 states, 7716 states have (on average 1.1678330741316745) internal successors, (9011), 7716 states have internal predecessors, (9011), 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 10:13:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7717 states to 7717 states and 9011 transitions. [2023-12-25 10:13:57,794 INFO L78 Accepts]: Start accepts. Automaton has 7717 states and 9011 transitions. Word has length 107 [2023-12-25 10:13:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:13:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 7717 states and 9011 transitions. [2023-12-25 10:13:57,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 10:13:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7717 states and 9011 transitions. [2023-12-25 10:13:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 10:13:57,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:13:57,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:57,798 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 10:13:57,995 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 10:13:57,996 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:13:57,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:13:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1356328642, now seen corresponding path program 1 times [2023-12-25 10:13:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:13:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25354103] [2023-12-25 10:13:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:13:57,997 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 10:13:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:13:57,998 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 10:13:58,008 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 10:13:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:13:58,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 10:13:58,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:13:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:13:59,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:14:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:14:00,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:14:00,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25354103] [2023-12-25 10:14:00,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25354103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:14:00,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:14:00,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2023-12-25 10:14:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014959458] [2023-12-25 10:14:00,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:14:00,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 10:14:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:14:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 10:14:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 10:14:00,730 INFO L87 Difference]: Start difference. First operand 7717 states and 9011 transitions. Second operand has 41 states, 41 states have (on average 6.170731707317073) internal successors, (253), 41 states have internal predecessors, (253), 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 10:15:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:15:08,278 INFO L93 Difference]: Finished difference Result 84852 states and 99099 transitions. [2023-12-25 10:15:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 617 states. [2023-12-25 10:15:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.170731707317073) internal successors, (253), 41 states have internal predecessors, (253), 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 133 [2023-12-25 10:15:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:15:08,356 INFO L225 Difference]: With dead ends: 84852 [2023-12-25 10:15:08,356 INFO L226 Difference]: Without dead ends: 83605 [2023-12-25 10:15:08,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199954 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=42877, Invalid=380273, Unknown=0, NotChecked=0, Total=423150 [2023-12-25 10:15:08,398 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 6131 mSDsluCounter, 9809 mSDsCounter, 0 mSdLazyCounter, 6322 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 10213 SdHoareTripleChecker+Invalid, 6393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 6322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-25 10:15:08,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6131 Valid, 10213 Invalid, 6393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 6322 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-25 10:15:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83605 states. [2023-12-25 10:15:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83605 to 34769. [2023-12-25 10:15:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34769 states, 34768 states have (on average 1.1730614358030373) internal successors, (40785), 34768 states have internal predecessors, (40785), 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 10:15:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34769 states to 34769 states and 40785 transitions. [2023-12-25 10:15:09,039 INFO L78 Accepts]: Start accepts. Automaton has 34769 states and 40785 transitions. Word has length 133 [2023-12-25 10:15:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:15:09,039 INFO L495 AbstractCegarLoop]: Abstraction has 34769 states and 40785 transitions. [2023-12-25 10:15:09,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.170731707317073) internal successors, (253), 41 states have internal predecessors, (253), 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 10:15:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 34769 states and 40785 transitions. [2023-12-25 10:15:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 10:15:09,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:15:09,042 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:09,046 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 (32)] Ended with exit code 0 [2023-12-25 10:15:09,245 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 10:15:09,245 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:15:09,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:15:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1351684126, now seen corresponding path program 1 times [2023-12-25 10:15:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:15:09,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056919435] [2023-12-25 10:15:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:15:09,246 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 10:15:09,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:15:09,247 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 10:15:09,248 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 10:15:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:15:09,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-25 10:15:09,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:15:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:15:13,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:15:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:15:15,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:15:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056919435] [2023-12-25 10:15:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056919435] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:15:15,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:15:15,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25] total 52 [2023-12-25 10:15:15,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119756851] [2023-12-25 10:15:15,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:15:15,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-25 10:15:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:15:15,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-25 10:15:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2389, Unknown=0, NotChecked=0, Total=2652 [2023-12-25 10:15:15,676 INFO L87 Difference]: Start difference. First operand 34769 states and 40785 transitions. Second operand has 52 states, 52 states have (on average 4.961538461538462) internal successors, (258), 52 states have internal predecessors, (258), 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 10:17:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:17:54,096 INFO L93 Difference]: Finished difference Result 112387 states and 131957 transitions. [2023-12-25 10:17:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 523 states. [2023-12-25 10:17:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.961538461538462) internal successors, (258), 52 states have internal predecessors, (258), 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 133 [2023-12-25 10:17:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:17:54,201 INFO L225 Difference]: With dead ends: 112387 [2023-12-25 10:17:54,202 INFO L226 Difference]: Without dead ends: 101642 [2023-12-25 10:17:54,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 571 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142475 ImplicationChecksByTransitivity, 146.8s TimeCoverageRelationStatistics Valid=23787, Invalid=303969, Unknown=0, NotChecked=0, Total=327756 [2023-12-25 10:17:54,243 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 5996 mSDsluCounter, 12661 mSDsCounter, 0 mSdLazyCounter, 7574 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5996 SdHoareTripleChecker+Valid, 13119 SdHoareTripleChecker+Invalid, 7737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 7574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-25 10:17:54,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5996 Valid, 13119 Invalid, 7737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 7574 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-12-25 10:17:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101642 states. [2023-12-25 10:17:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101642 to 62405. [2023-12-25 10:17:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62405 states, 62404 states have (on average 1.171847958464201) internal successors, (73128), 62404 states have internal predecessors, (73128), 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 10:17:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62405 states to 62405 states and 73128 transitions. [2023-12-25 10:17:55,254 INFO L78 Accepts]: Start accepts. Automaton has 62405 states and 73128 transitions. Word has length 133 [2023-12-25 10:17:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:17:55,254 INFO L495 AbstractCegarLoop]: Abstraction has 62405 states and 73128 transitions. [2023-12-25 10:17:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.961538461538462) internal successors, (258), 52 states have internal predecessors, (258), 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 10:17:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 62405 states and 73128 transitions. [2023-12-25 10:17:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-25 10:17:55,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:17:55,258 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:55,261 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 (33)] Ended with exit code 0 [2023-12-25 10:17:55,459 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 10:17:55,459 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:17:55,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:17:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1566528444, now seen corresponding path program 1 times [2023-12-25 10:17:55,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:17:55,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570505206] [2023-12-25 10:17:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:17:55,460 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 10:17:55,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:17:55,461 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 10:17:55,462 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 10:17:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:17:55,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 10:17:55,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:17:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:17:56,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:17:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:17:56,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:17:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570505206] [2023-12-25 10:17:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570505206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:17:56,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:17:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-12-25 10:17:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835169026] [2023-12-25 10:17:56,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:17:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 10:17:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:17:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 10:17:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 10:17:56,840 INFO L87 Difference]: Start difference. First operand 62405 states and 73128 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 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 10:18:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:18:01,656 INFO L93 Difference]: Finished difference Result 110275 states and 128636 transitions. [2023-12-25 10:18:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-25 10:18:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 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 134 [2023-12-25 10:18:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:18:01,746 INFO L225 Difference]: With dead ends: 110275 [2023-12-25 10:18:01,746 INFO L226 Difference]: Without dead ends: 95099 [2023-12-25 10:18:01,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=969, Invalid=4433, Unknown=0, NotChecked=0, Total=5402 [2023-12-25 10:18:01,777 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1758 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 10:18:01,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 3648 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 10:18:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95099 states. [2023-12-25 10:18:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95099 to 50107. [2023-12-25 10:18:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50107 states, 50106 states have (on average 1.1673252704266954) internal successors, (58490), 50106 states have internal predecessors, (58490), 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 10:18:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50107 states to 50107 states and 58490 transitions. [2023-12-25 10:18:03,209 INFO L78 Accepts]: Start accepts. Automaton has 50107 states and 58490 transitions. Word has length 134 [2023-12-25 10:18:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:18:03,210 INFO L495 AbstractCegarLoop]: Abstraction has 50107 states and 58490 transitions. [2023-12-25 10:18:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 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 10:18:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 50107 states and 58490 transitions. [2023-12-25 10:18:03,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-25 10:18:03,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:18:03,213 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:03,215 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 (34)] Ended with exit code 0 [2023-12-25 10:18:03,413 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 10:18:03,413 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:18:03,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:18:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2135855076, now seen corresponding path program 1 times [2023-12-25 10:18:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:18:03,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906634538] [2023-12-25 10:18:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:18:03,415 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 10:18:03,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:18:03,415 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 10:18:03,416 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 10:18:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:18:03,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 10:18:03,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:18:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:18:04,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:18:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:18:04,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:18:04,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906634538] [2023-12-25 10:18:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906634538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:18:04,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:18:04,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-25 10:18:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213972682] [2023-12-25 10:18:04,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:18:04,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 10:18:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:18:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 10:18:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-25 10:18:04,705 INFO L87 Difference]: Start difference. First operand 50107 states and 58490 transitions. Second operand has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 23 states have internal predecessors, (250), 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 10:18:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:18:06,827 INFO L93 Difference]: Finished difference Result 120602 states and 140971 transitions. [2023-12-25 10:18:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 10:18:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 23 states have internal predecessors, (250), 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 134 [2023-12-25 10:18:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:18:06,922 INFO L225 Difference]: With dead ends: 120602 [2023-12-25 10:18:06,922 INFO L226 Difference]: Without dead ends: 87514 [2023-12-25 10:18:06,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=621, Invalid=2459, Unknown=0, NotChecked=0, Total=3080 [2023-12-25 10:18:06,955 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1085 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 10:18:06,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 2765 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 10:18:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87514 states. [2023-12-25 10:18:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87514 to 42132. [2023-12-25 10:18:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42132 states, 42131 states have (on average 1.1610927820369799) internal successors, (48918), 42131 states have internal predecessors, (48918), 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 10:18:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42132 states to 42132 states and 48918 transitions. [2023-12-25 10:18:07,943 INFO L78 Accepts]: Start accepts. Automaton has 42132 states and 48918 transitions. Word has length 134 [2023-12-25 10:18:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:18:07,943 INFO L495 AbstractCegarLoop]: Abstraction has 42132 states and 48918 transitions. [2023-12-25 10:18:07,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 23 states have internal predecessors, (250), 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 10:18:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 42132 states and 48918 transitions. [2023-12-25 10:18:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 10:18:07,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:18:07,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:07,948 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 (35)] Ended with exit code 0 [2023-12-25 10:18:08,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:18:08,147 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:18:08,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:18:08,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1650728756, now seen corresponding path program 1 times [2023-12-25 10:18:08,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:18:08,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086338754] [2023-12-25 10:18:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:18:08,148 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 10:18:08,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:18:08,148 INFO L229 MonitoredProcess]: Starting monitored process 36 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 10:18:08,150 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 (36)] Waiting until timeout for monitored process [2023-12-25 10:18:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:18:08,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 10:18:08,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:18:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:18:09,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:18:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:18:09,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:18:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086338754] [2023-12-25 10:18:09,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086338754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:18:09,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:18:09,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-12-25 10:18:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983982570] [2023-12-25 10:18:09,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:18:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 10:18:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:18:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 10:18:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-12-25 10:18:09,889 INFO L87 Difference]: Start difference. First operand 42132 states and 48918 transitions. Second operand has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 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 10:18:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:18:15,782 INFO L93 Difference]: Finished difference Result 64388 states and 75073 transitions. [2023-12-25 10:18:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-25 10:18:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 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 135 [2023-12-25 10:18:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:18:15,833 INFO L225 Difference]: With dead ends: 64388 [2023-12-25 10:18:15,833 INFO L226 Difference]: Without dead ends: 49861 [2023-12-25 10:18:15,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1306, Invalid=6004, Unknown=0, NotChecked=0, Total=7310 [2023-12-25 10:18:15,852 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 2065 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:18:15,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 2829 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 10:18:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49861 states. [2023-12-25 10:18:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49861 to 24543. [2023-12-25 10:18:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24543 states, 24542 states have (on average 1.1516991280254258) internal successors, (28265), 24542 states have internal predecessors, (28265), 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 10:18:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24543 states to 24543 states and 28265 transitions. [2023-12-25 10:18:16,231 INFO L78 Accepts]: Start accepts. Automaton has 24543 states and 28265 transitions. Word has length 135 [2023-12-25 10:18:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:18:16,231 INFO L495 AbstractCegarLoop]: Abstraction has 24543 states and 28265 transitions. [2023-12-25 10:18:16,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.481481481481481) internal successors, (256), 27 states have internal predecessors, (256), 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 10:18:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 24543 states and 28265 transitions. [2023-12-25 10:18:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 10:18:16,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:18:16,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:16,236 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 (36)] Ended with exit code 0 [2023-12-25 10:18:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:18:16,434 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:18:16,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:18:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 347734946, now seen corresponding path program 1 times [2023-12-25 10:18:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:18:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809057398] [2023-12-25 10:18:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:18:16,435 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 10:18:16,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:18:16,436 INFO L229 MonitoredProcess]: Starting monitored process 37 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 10:18:16,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-25 10:18:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:18:16,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 10:18:16,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:18:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:18:18,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:18:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:18:19,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:18:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809057398] [2023-12-25 10:18:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809057398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:18:19,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:18:19,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 43 [2023-12-25 10:18:19,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336215969] [2023-12-25 10:18:19,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:18:19,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 10:18:19,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:18:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 10:18:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 10:18:19,651 INFO L87 Difference]: Start difference. First operand 24543 states and 28265 transitions. Second operand has 43 states, 43 states have (on average 5.906976744186046) internal successors, (254), 43 states have internal predecessors, (254), 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 10:19:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:19:22,176 INFO L93 Difference]: Finished difference Result 92944 states and 107422 transitions. [2023-12-25 10:19:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2023-12-25 10:19:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.906976744186046) internal successors, (254), 43 states have internal predecessors, (254), 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 135 [2023-12-25 10:19:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:19:22,251 INFO L225 Difference]: With dead ends: 92944 [2023-12-25 10:19:22,251 INFO L226 Difference]: Without dead ends: 85365 [2023-12-25 10:19:22,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47980 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=9938, Invalid=108742, Unknown=0, NotChecked=0, Total=118680 [2023-12-25 10:19:22,275 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 3136 mSDsluCounter, 12147 mSDsCounter, 0 mSdLazyCounter, 5821 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 12649 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-25 10:19:22,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3136 Valid, 12649 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 5821 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-25 10:19:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85365 states. [2023-12-25 10:19:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85365 to 48859. [2023-12-25 10:19:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48859 states, 48858 states have (on average 1.154120103156085) internal successors, (56388), 48858 states have internal predecessors, (56388), 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 10:19:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48859 states to 48859 states and 56388 transitions. [2023-12-25 10:19:22,915 INFO L78 Accepts]: Start accepts. Automaton has 48859 states and 56388 transitions. Word has length 135 [2023-12-25 10:19:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:19:22,915 INFO L495 AbstractCegarLoop]: Abstraction has 48859 states and 56388 transitions. [2023-12-25 10:19:22,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.906976744186046) internal successors, (254), 43 states have internal predecessors, (254), 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 10:19:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 48859 states and 56388 transitions. [2023-12-25 10:19:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 10:19:22,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:19:22,918 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:22,920 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 (37)] Forceful destruction successful, exit code 0 [2023-12-25 10:19:23,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:19:23,118 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:19:23,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:19:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 357440411, now seen corresponding path program 1 times [2023-12-25 10:19:23,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:19:23,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160789136] [2023-12-25 10:19:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:19:23,119 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 10:19:23,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:19:23,120 INFO L229 MonitoredProcess]: Starting monitored process 38 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 10:19:23,120 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 (38)] Waiting until timeout for monitored process [2023-12-25 10:19:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:19:23,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 10:19:23,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:19:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 19 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:19:25,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:19:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 19 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:19:26,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:19:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160789136] [2023-12-25 10:19:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160789136] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:19:26,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:19:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2023-12-25 10:19:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079742757] [2023-12-25 10:19:26,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:19:26,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-25 10:19:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:19:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-25 10:19:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 10:19:26,612 INFO L87 Difference]: Start difference. First operand 48859 states and 56388 transitions. Second operand has 45 states, 45 states have (on average 5.688888888888889) internal successors, (256), 45 states have internal predecessors, (256), 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 10:20:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:20:10,581 INFO L93 Difference]: Finished difference Result 124218 states and 143181 transitions. [2023-12-25 10:20:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2023-12-25 10:20:10,581 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.688888888888889) internal successors, (256), 45 states have internal predecessors, (256), 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 135 [2023-12-25 10:20:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:20:10,689 INFO L225 Difference]: With dead ends: 124218 [2023-12-25 10:20:10,690 INFO L226 Difference]: Without dead ends: 104317 [2023-12-25 10:20:10,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62192 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=13847, Invalid=136309, Unknown=0, NotChecked=0, Total=150156 [2023-12-25 10:20:10,724 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 4364 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 6397 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 13160 SdHoareTripleChecker+Invalid, 6440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 6397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-25 10:20:10,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 13160 Invalid, 6440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 6397 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-25 10:20:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104317 states. [2023-12-25 10:20:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104317 to 66450. [2023-12-25 10:20:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66450 states, 66449 states have (on average 1.1500248310734549) internal successors, (76418), 66449 states have internal predecessors, (76418), 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 10:20:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66450 states to 66450 states and 76418 transitions. [2023-12-25 10:20:11,882 INFO L78 Accepts]: Start accepts. Automaton has 66450 states and 76418 transitions. Word has length 135 [2023-12-25 10:20:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:20:11,882 INFO L495 AbstractCegarLoop]: Abstraction has 66450 states and 76418 transitions. [2023-12-25 10:20:11,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.688888888888889) internal successors, (256), 45 states have internal predecessors, (256), 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 10:20:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 66450 states and 76418 transitions. [2023-12-25 10:20:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 10:20:11,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:20:11,885 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:11,888 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 (38)] Ended with exit code 0 [2023-12-25 10:20:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:20:12,086 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:20:12,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:20:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash 585196683, now seen corresponding path program 1 times [2023-12-25 10:20:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:20:12,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480271461] [2023-12-25 10:20:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:20:12,087 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 10:20:12,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:20:12,088 INFO L229 MonitoredProcess]: Starting monitored process 39 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 10:20:12,089 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 (39)] Waiting until timeout for monitored process [2023-12-25 10:20:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:20:12,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 10:20:12,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:20:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 43 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:13,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:20:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 58 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:13,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:20:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480271461] [2023-12-25 10:20:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480271461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:20:13,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:20:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-25 10:20:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461382994] [2023-12-25 10:20:13,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:20:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 10:20:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:20:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 10:20:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-25 10:20:13,621 INFO L87 Difference]: Start difference. First operand 66450 states and 76418 transitions. Second operand has 23 states, 23 states have (on average 10.956521739130435) internal successors, (252), 23 states have internal predecessors, (252), 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 10:20:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:20:15,680 INFO L93 Difference]: Finished difference Result 151218 states and 175154 transitions. [2023-12-25 10:20:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 10:20:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.956521739130435) internal successors, (252), 23 states have internal predecessors, (252), 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 136 [2023-12-25 10:20:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:20:15,788 INFO L225 Difference]: With dead ends: 151218 [2023-12-25 10:20:15,788 INFO L226 Difference]: Without dead ends: 103521 [2023-12-25 10:20:15,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=621, Invalid=2459, Unknown=0, NotChecked=0, Total=3080 [2023-12-25 10:20:15,825 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1475 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 10:20:15,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 2319 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 10:20:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103521 states. [2023-12-25 10:20:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103521 to 79768. [2023-12-25 10:20:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79768 states, 79767 states have (on average 1.1420386876778619) internal successors, (91097), 79767 states have internal predecessors, (91097), 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 10:20:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79768 states to 79768 states and 91097 transitions. [2023-12-25 10:20:17,300 INFO L78 Accepts]: Start accepts. Automaton has 79768 states and 91097 transitions. Word has length 136 [2023-12-25 10:20:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:20:17,300 INFO L495 AbstractCegarLoop]: Abstraction has 79768 states and 91097 transitions. [2023-12-25 10:20:17,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.956521739130435) internal successors, (252), 23 states have internal predecessors, (252), 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 10:20:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 79768 states and 91097 transitions. [2023-12-25 10:20:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 10:20:17,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:20:17,304 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:17,308 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 (39)] Forceful destruction successful, exit code 0 [2023-12-25 10:20:17,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:20:17,508 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:20:17,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:20:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1209416181, now seen corresponding path program 1 times [2023-12-25 10:20:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:20:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035874092] [2023-12-25 10:20:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:20:17,511 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 10:20:17,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:20:17,512 INFO L229 MonitoredProcess]: Starting monitored process 40 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 10:20:17,514 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 (40)] Waiting until timeout for monitored process [2023-12-25 10:20:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:20:17,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 10:20:17,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:20:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:17,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:20:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:18,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:20:18,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035874092] [2023-12-25 10:20:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035874092] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:20:18,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:20:18,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2023-12-25 10:20:18,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746557961] [2023-12-25 10:20:18,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:20:18,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 10:20:18,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:20:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 10:20:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-25 10:20:18,014 INFO L87 Difference]: Start difference. First operand 79768 states and 91097 transitions. Second operand has 16 states, 16 states have (on average 10.75) internal successors, (172), 16 states have internal predecessors, (172), 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 10:20:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:20:18,755 INFO L93 Difference]: Finished difference Result 123221 states and 141499 transitions. [2023-12-25 10:20:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 10:20:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.75) internal successors, (172), 16 states have internal predecessors, (172), 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 136 [2023-12-25 10:20:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:20:18,847 INFO L225 Difference]: With dead ends: 123221 [2023-12-25 10:20:18,847 INFO L226 Difference]: Without dead ends: 94852 [2023-12-25 10:20:18,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-25 10:20:18,881 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 485 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 10:20:18,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1623 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 10:20:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94852 states. [2023-12-25 10:20:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94852 to 68134. [2023-12-25 10:20:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68134 states, 68133 states have (on average 1.1401083175553697) internal successors, (77679), 68133 states have internal predecessors, (77679), 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 10:20:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68134 states to 68134 states and 77679 transitions. [2023-12-25 10:20:19,866 INFO L78 Accepts]: Start accepts. Automaton has 68134 states and 77679 transitions. Word has length 136 [2023-12-25 10:20:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:20:19,866 INFO L495 AbstractCegarLoop]: Abstraction has 68134 states and 77679 transitions. [2023-12-25 10:20:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.75) internal successors, (172), 16 states have internal predecessors, (172), 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 10:20:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 68134 states and 77679 transitions. [2023-12-25 10:20:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 10:20:19,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:20:19,869 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:19,872 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 (40)] Forceful destruction successful, exit code 0 [2023-12-25 10:20:20,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:20:20,069 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:20:20,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:20:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1159293355, now seen corresponding path program 1 times [2023-12-25 10:20:20,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:20:20,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199472644] [2023-12-25 10:20:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:20:20,070 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 10:20:20,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:20:20,071 INFO L229 MonitoredProcess]: Starting monitored process 41 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 10:20:20,072 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 (41)] Waiting until timeout for monitored process [2023-12-25 10:20:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:20:20,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 10:20:20,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:20:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:22,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:20:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:23,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:20:23,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199472644] [2023-12-25 10:20:23,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199472644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:20:23,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:20:23,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2023-12-25 10:20:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248178339] [2023-12-25 10:20:23,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:20:23,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 10:20:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:20:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 10:20:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 10:20:23,414 INFO L87 Difference]: Start difference. First operand 68134 states and 77679 transitions. Second operand has 36 states, 36 states have (on average 7.0) internal successors, (252), 36 states have internal predecessors, (252), 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 10:20:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:20:51,008 INFO L93 Difference]: Finished difference Result 149605 states and 171522 transitions. [2023-12-25 10:20:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-25 10:20:51,008 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.0) internal successors, (252), 36 states have internal predecessors, (252), 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 136 [2023-12-25 10:20:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:20:51,120 INFO L225 Difference]: With dead ends: 149605 [2023-12-25 10:20:51,120 INFO L226 Difference]: Without dead ends: 103465 [2023-12-25 10:20:51,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8432 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=3286, Invalid=21520, Unknown=0, NotChecked=0, Total=24806 [2023-12-25 10:20:51,159 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 3634 mSDsluCounter, 5468 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3634 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-25 10:20:51,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3634 Valid, 5840 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-25 10:20:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103465 states. [2023-12-25 10:20:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103465 to 71706. [2023-12-25 10:20:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71706 states, 71705 states have (on average 1.1376891430165261) internal successors, (81578), 71705 states have internal predecessors, (81578), 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 10:20:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71706 states to 71706 states and 81578 transitions. [2023-12-25 10:20:52,102 INFO L78 Accepts]: Start accepts. Automaton has 71706 states and 81578 transitions. Word has length 136 [2023-12-25 10:20:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:20:52,103 INFO L495 AbstractCegarLoop]: Abstraction has 71706 states and 81578 transitions. [2023-12-25 10:20:52,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.0) internal successors, (252), 36 states have internal predecessors, (252), 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 10:20:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 71706 states and 81578 transitions. [2023-12-25 10:20:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-25 10:20:52,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:20:52,105 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:52,108 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 (41)] Ended with exit code 0 [2023-12-25 10:20:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:20:52,306 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:20:52,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:20:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1602310334, now seen corresponding path program 1 times [2023-12-25 10:20:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:20:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293769597] [2023-12-25 10:20:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:20:52,307 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 10:20:52,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:20:52,308 INFO L229 MonitoredProcess]: Starting monitored process 42 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 10:20:52,309 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 (42)] Waiting until timeout for monitored process [2023-12-25 10:20:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:20:52,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 10:20:52,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:20:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:53,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:20:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:20:54,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:20:54,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293769597] [2023-12-25 10:20:54,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293769597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:20:54,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:20:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-12-25 10:20:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141707163] [2023-12-25 10:20:54,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:20:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 10:20:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:20:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 10:20:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-12-25 10:20:54,264 INFO L87 Difference]: Start difference. First operand 71706 states and 81578 transitions. Second operand has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 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 10:21:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 10:21:00,383 INFO L93 Difference]: Finished difference Result 117341 states and 133606 transitions. [2023-12-25 10:21:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-25 10:21:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 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 137 [2023-12-25 10:21:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 10:21:00,469 INFO L225 Difference]: With dead ends: 117341 [2023-12-25 10:21:00,469 INFO L226 Difference]: Without dead ends: 94294 [2023-12-25 10:21:00,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1306, Invalid=6004, Unknown=0, NotChecked=0, Total=7310 [2023-12-25 10:21:00,502 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1525 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 10:21:00,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 3618 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 10:21:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94294 states. [2023-12-25 10:21:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94294 to 59444. [2023-12-25 10:21:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59444 states, 59443 states have (on average 1.1375435290950995) internal successors, (67619), 59443 states have internal predecessors, (67619), 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 10:21:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59444 states to 59444 states and 67619 transitions. [2023-12-25 10:21:01,258 INFO L78 Accepts]: Start accepts. Automaton has 59444 states and 67619 transitions. Word has length 137 [2023-12-25 10:21:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 10:21:01,258 INFO L495 AbstractCegarLoop]: Abstraction has 59444 states and 67619 transitions. [2023-12-25 10:21:01,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 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 10:21:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 59444 states and 67619 transitions. [2023-12-25 10:21:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-25 10:21:01,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 10:21:01,267 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-25 10:21:01,269 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 (42)] Ended with exit code 0 [2023-12-25 10:21:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:21:01,467 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 10:21:01,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 10:21:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1970934260, now seen corresponding path program 1 times [2023-12-25 10:21:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 10:21:01,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803840319] [2023-12-25 10:21:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 10:21:01,469 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 10:21:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 10:21:01,470 INFO L229 MonitoredProcess]: Starting monitored process 43 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 10:21:01,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-25 10:21:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 10:21:01,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-25 10:21:01,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 10:21:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 174 proven. 65 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 10:21:06,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 10:21:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 84 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 10:21:10,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 10:21:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803840319] [2023-12-25 10:21:10,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803840319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 10:21:10,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 10:21:10,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 65 [2023-12-25 10:21:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835437843] [2023-12-25 10:21:10,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 10:21:10,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-25 10:21:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 10:21:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-25 10:21:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=3510, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 10:21:10,040 INFO L87 Difference]: Start difference. First operand 59444 states and 67619 transitions. Second operand has 65 states, 65 states have (on average 5.2615384615384615) internal successors, (342), 65 states have internal predecessors, (342), 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) Received shutdown request... [2023-12-25 10:25:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 616 states. [2023-12-25 10:25:10,032 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 10:25:10,032 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 10:25:10,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203487 ImplicationChecksByTransitivity, 224.6s TimeCoverageRelationStatistics Valid=32436, Invalid=427925, Unknown=1, NotChecked=0, Total=460362 [2023-12-25 10:25:10,043 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 6132 mSDsluCounter, 9285 mSDsCounter, 0 mSdLazyCounter, 8747 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6132 SdHoareTripleChecker+Valid, 9553 SdHoareTripleChecker+Invalid, 8921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 8747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-25 10:25:10,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6132 Valid, 9553 Invalid, 8921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [174 Valid, 8747 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-25 10:25:10,044 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 10:25:10,047 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 (43)] Ended with exit code 0 [2023-12-25 10:25:10,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 10:25:10,245 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (59444states) and FLOYD_HOARE automaton (currently 616 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-11-8-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-10-5-1 context. [2023-12-25 10:25:10,249 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-25 10:25:10,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 10:25:10,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 10:25:10 BoogieIcfgContainer [2023-12-25 10:25:10,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 10:25:10,254 INFO L158 Benchmark]: Toolchain (without parser) took 834543.50ms. Allocated memory was 197.1MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 138.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-12-25 10:25:10,254 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 197.1MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 10:25:10,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.98ms. Allocated memory is still 197.1MB. Free memory was 138.2MB in the beginning and 121.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-25 10:25:10,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.54ms. Allocated memory is still 197.1MB. Free memory was 121.5MB in the beginning and 119.0MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-25 10:25:10,255 INFO L158 Benchmark]: Boogie Preprocessor took 47.06ms. Allocated memory is still 197.1MB. Free memory was 119.0MB in the beginning and 116.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 10:25:10,255 INFO L158 Benchmark]: RCFGBuilder took 542.87ms. Allocated memory was 197.1MB in the beginning and 290.5MB in the end (delta: 93.3MB). Free memory was 116.2MB in the beginning and 233.0MB in the end (delta: -116.8MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2023-12-25 10:25:10,255 INFO L158 Benchmark]: TraceAbstraction took 833566.07ms. Allocated memory was 290.5MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 231.9MB in the beginning and 1.1GB in the end (delta: -913.4MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-12-25 10:25:10,256 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 197.1MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 340.98ms. Allocated memory is still 197.1MB. Free memory was 138.2MB in the beginning and 121.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.54ms. Allocated memory is still 197.1MB. Free memory was 121.5MB in the beginning and 119.0MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.06ms. Allocated memory is still 197.1MB. Free memory was 119.0MB in the beginning and 116.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 542.87ms. Allocated memory was 197.1MB in the beginning and 290.5MB in the end (delta: 93.3MB). Free memory was 116.2MB in the beginning and 233.0MB in the end (delta: -116.8MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * TraceAbstraction took 833566.07ms. Allocated memory was 290.5MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 231.9MB in the beginning and 1.1GB in the end (delta: -913.4MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 244]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 244). Cancelled while NwaCegarLoop was constructing difference of abstraction (59444states) and FLOYD_HOARE automaton (currently 616 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-11-8-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-10-5-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 833.5s, OverallIterations: 42, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 757.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74479 SdHoareTripleChecker+Valid, 79.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74479 mSDsluCounter, 103035 SdHoareTripleChecker+Invalid, 73.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95083 mSDsCounter, 1135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52803 IncrementalHoareTripleChecker+Invalid, 53938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1135 mSolverCounterUnsat, 7952 mSDtfsCounter, 52803 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9796 GetRequests, 5607 SyntacticMatches, 3 SemanticMatches, 4185 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 828567 ImplicationChecksByTransitivity, 685.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79768occurred in iteration=38, InterpolantAutomatonStates: 3157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 41 MinimizatonAttempts, 523898 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 48.6s InterpolantComputationTime, 3754 NumberOfCodeBlocks, 3754 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 5985 ConstructedInterpolants, 1563 QuantifiedInterpolants, 85922 SizeOfPredicates, 244 NumberOfNonLiveVariables, 8221 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 62 InterpolantComputations, 22 PerfectInterpolantSequences, 1329/3352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown