/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/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:56:43,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:56:43,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:56:43,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:56:43,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:56:43,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:56:43,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:56:43,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:56:43,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:56:43,212 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:56:43,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:56:43,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:56:43,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:56:43,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:56:43,213 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:56:43,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:56:43,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:56:43,214 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:56:43,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:56:43,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:56:43,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:56:43,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:56:43,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:56:43,218 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:56:43,222 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:56:43,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:56:43,223 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:56:43,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:56:43,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:56:43,223 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:56:43,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:56:43,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:56:43,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:56:43,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:56:43,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:56:43,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:56:43,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:56:43,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:56:43,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:56:43,226 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:56:43,226 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:56:43,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:56:43,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:56:43,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:56:43,421 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:56:43,423 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:56:43,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2023-12-16 17:56:44,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:56:44,629 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:56:44,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2023-12-16 17:56:44,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bab0e89b/0ca380d9c8634e52986f28e28f8db7ae/FLAG9d92a9641 [2023-12-16 17:56:44,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bab0e89b/0ca380d9c8634e52986f28e28f8db7ae [2023-12-16 17:56:44,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:56:44,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:56:44,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:56:44,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:56:44,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:56:44,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:44,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22eabaf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44, skipping insertion in model container [2023-12-16 17:56:44,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:44,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:56:44,870 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/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2023-12-16 17:56:44,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:56:44,883 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:56:44,922 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/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2023-12-16 17:56:44,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:56:44,955 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:56:44,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44 WrapperNode [2023-12-16 17:56:44,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:56:44,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:56:44,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:56:44,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:56:44,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:44,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,000 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 380 [2023-12-16 17:56:45,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:56:45,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:56:45,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:56:45,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:56:45,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,013 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,029 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 17:56:45,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:56:45,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:56:45,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:56:45,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:56:45,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (1/1) ... [2023-12-16 17:56:45,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:56:45,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:56:45,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 17:56:45,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 17:56:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:56:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:56:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-12-16 17:56:45,098 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-12-16 17:56:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-16 17:56:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-16 17:56:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-12-16 17:56:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-12-16 17:56:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-12-16 17:56:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-12-16 17:56:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-12-16 17:56:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-12-16 17:56:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 17:56:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 17:56:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:56:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:56:45,184 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:56:45,185 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:56:45,565 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:56:45,596 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:56:45,596 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 17:56:45,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:56:45 BoogieIcfgContainer [2023-12-16 17:56:45,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:56:45,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:56:45,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:56:45,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:56:45,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:56:44" (1/3) ... [2023-12-16 17:56:45,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31da10fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:56:45, skipping insertion in model container [2023-12-16 17:56:45,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:44" (2/3) ... [2023-12-16 17:56:45,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31da10fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:56:45, skipping insertion in model container [2023-12-16 17:56:45,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:56:45" (3/3) ... [2023-12-16 17:56:45,604 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2023-12-16 17:56:45,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:56:45,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:56:45,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:56:45,660 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;@b958e45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:56:45,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:56:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 129 states have (on average 1.6046511627906976) internal successors, (207), 134 states have internal predecessors, (207), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-16 17:56:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 17:56:45,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:45,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:45,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:45,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1165195423, now seen corresponding path program 1 times [2023-12-16 17:56:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:45,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247561251] [2023-12-16 17:56:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:45,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:45,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:45,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:56:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:45,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:45,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:45,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:45,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:45,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247561251] [2023-12-16 17:56:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247561251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224113682] [2023-12-16 17:56:45,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:45,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:45,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:45,856 INFO L87 Difference]: Start difference. First operand has 174 states, 129 states have (on average 1.6046511627906976) internal successors, (207), 134 states have internal predecessors, (207), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:56:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:45,980 INFO L93 Difference]: Finished difference Result 352 states and 610 transitions. [2023-12-16 17:56:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 17:56:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:45,995 INFO L225 Difference]: With dead ends: 352 [2023-12-16 17:56:45,995 INFO L226 Difference]: Without dead ends: 180 [2023-12-16 17:56:46,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:46,020 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 18 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:46,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 787 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-16 17:56:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2023-12-16 17:56:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 133 states have (on average 1.5639097744360901) internal successors, (208), 137 states have internal predecessors, (208), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-16 17:56:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 282 transitions. [2023-12-16 17:56:46,058 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 282 transitions. Word has length 14 [2023-12-16 17:56:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:46,058 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 282 transitions. [2023-12-16 17:56:46,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:56:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 282 transitions. [2023-12-16 17:56:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 17:56:46,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:46,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:46,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:46,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:46,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:46,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash 579778909, now seen corresponding path program 1 times [2023-12-16 17:56:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935817127] [2023-12-16 17:56:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:46,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:46,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:46,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:56:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:46,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:46,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:46,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:46,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935817127] [2023-12-16 17:56:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935817127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628178232] [2023-12-16 17:56:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:46,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:46,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:46,327 INFO L87 Difference]: Start difference. First operand 178 states and 282 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:56:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:46,372 INFO L93 Difference]: Finished difference Result 370 states and 588 transitions. [2023-12-16 17:56:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:46,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 17:56:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:46,376 INFO L225 Difference]: With dead ends: 370 [2023-12-16 17:56:46,376 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 17:56:46,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:46,378 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 25 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:46,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 807 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:46,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 17:56:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2023-12-16 17:56:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 148 states have internal predecessors, (222), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 17:56:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 298 transitions. [2023-12-16 17:56:46,408 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 298 transitions. Word has length 15 [2023-12-16 17:56:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:46,408 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 298 transitions. [2023-12-16 17:56:46,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:56:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 298 transitions. [2023-12-16 17:56:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 17:56:46,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:46,409 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:46,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:46,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:46,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1957244647, now seen corresponding path program 1 times [2023-12-16 17:56:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:46,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686713570] [2023-12-16 17:56:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:46,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:46,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:46,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:46,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:56:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:46,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:56:46,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:46,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:46,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:46,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686713570] [2023-12-16 17:56:46,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686713570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:46,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:46,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252929778] [2023-12-16 17:56:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:46,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:46,698 INFO L87 Difference]: Start difference. First operand 191 states and 298 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:46,731 INFO L93 Difference]: Finished difference Result 402 states and 634 transitions. [2023-12-16 17:56:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-16 17:56:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:46,735 INFO L225 Difference]: With dead ends: 402 [2023-12-16 17:56:46,736 INFO L226 Difference]: Without dead ends: 220 [2023-12-16 17:56:46,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:46,739 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 22 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:46,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 542 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-16 17:56:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 193. [2023-12-16 17:56:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.5342465753424657) internal successors, (224), 150 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 17:56:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 300 transitions. [2023-12-16 17:56:46,760 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 300 transitions. Word has length 23 [2023-12-16 17:56:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:46,761 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 300 transitions. [2023-12-16 17:56:46,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 300 transitions. [2023-12-16 17:56:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 17:56:46,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:46,762 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:46,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:46,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:46,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 784621896, now seen corresponding path program 1 times [2023-12-16 17:56:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102135771] [2023-12-16 17:56:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:46,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:46,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:46,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:46,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:56:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:47,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:47,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:47,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:47,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:47,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102135771] [2023-12-16 17:56:47,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102135771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:47,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:47,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:56:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197626115] [2023-12-16 17:56:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:47,036 INFO L87 Difference]: Start difference. First operand 193 states and 300 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:47,064 INFO L93 Difference]: Finished difference Result 378 states and 591 transitions. [2023-12-16 17:56:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-12-16 17:56:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:47,066 INFO L225 Difference]: With dead ends: 378 [2023-12-16 17:56:47,066 INFO L226 Difference]: Without dead ends: 200 [2023-12-16 17:56:47,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:47,069 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:47,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1080 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-16 17:56:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2023-12-16 17:56:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 149 states have (on average 1.523489932885906) internal successors, (227), 153 states have internal predecessors, (227), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2023-12-16 17:56:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2023-12-16 17:56:47,082 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 31 [2023-12-16 17:56:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:47,082 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2023-12-16 17:56:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2023-12-16 17:56:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 17:56:47,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:47,088 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] [2023-12-16 17:56:47,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:47,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:47,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash -64301629, now seen corresponding path program 1 times [2023-12-16 17:56:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:47,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413376070] [2023-12-16 17:56:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:47,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:47,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 17:56:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:47,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:56:47,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:47,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:47,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:47,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413376070] [2023-12-16 17:56:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413376070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:47,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:47,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:56:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111626286] [2023-12-16 17:56:47,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:47,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:56:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:56:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:47,412 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:56:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:47,474 INFO L93 Difference]: Finished difference Result 340 states and 531 transitions. [2023-12-16 17:56:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:56:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-12-16 17:56:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:47,476 INFO L225 Difference]: With dead ends: 340 [2023-12-16 17:56:47,476 INFO L226 Difference]: Without dead ends: 193 [2023-12-16 17:56:47,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:47,477 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 117 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:47,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1176 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-16 17:56:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-12-16 17:56:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.5) internal successors, (219), 150 states have internal predecessors, (219), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 17:56:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2023-12-16 17:56:47,494 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 295 transitions. Word has length 34 [2023-12-16 17:56:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:47,494 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 295 transitions. [2023-12-16 17:56:47,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:56:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 295 transitions. [2023-12-16 17:56:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 17:56:47,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:47,495 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:47,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:47,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:47,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 972312280, now seen corresponding path program 1 times [2023-12-16 17:56:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:47,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450347565] [2023-12-16 17:56:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:47,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:47,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:47,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:47,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:56:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:47,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:47,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:47,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:47,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450347565] [2023-12-16 17:56:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450347565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:56:47,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:56:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 17:56:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852094803] [2023-12-16 17:56:47,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:56:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:56:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:56:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:47,802 INFO L87 Difference]: Start difference. First operand 193 states and 295 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:47,850 INFO L93 Difference]: Finished difference Result 435 states and 678 transitions. [2023-12-16 17:56:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:47,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-12-16 17:56:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:47,852 INFO L225 Difference]: With dead ends: 435 [2023-12-16 17:56:47,852 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 17:56:47,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:47,853 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 80 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:47,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1113 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 17:56:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2023-12-16 17:56:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.470899470899471) internal successors, (278), 193 states have internal predecessors, (278), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 17:56:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 374 transitions. [2023-12-16 17:56:47,863 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 374 transitions. Word has length 34 [2023-12-16 17:56:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:47,863 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 374 transitions. [2023-12-16 17:56:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 374 transitions. [2023-12-16 17:56:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 17:56:47,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:47,864 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:47,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:48,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:48,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:48,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1882466360, now seen corresponding path program 2 times [2023-12-16 17:56:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:48,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879171802] [2023-12-16 17:56:48,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:56:48,070 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 [2023-12-16 17:56:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:48,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:48,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 17:56:48,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 17:56:48,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:56:48,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:48,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 17:56:48,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:48,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879171802] [2023-12-16 17:56:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879171802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:48,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:48,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:48,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311902978] [2023-12-16 17:56:48,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:48,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:48,170 INFO L87 Difference]: Start difference. First operand 246 states and 374 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:48,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:48,215 INFO L93 Difference]: Finished difference Result 462 states and 727 transitions. [2023-12-16 17:56:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 17:56:48,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-12-16 17:56:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:48,217 INFO L225 Difference]: With dead ends: 462 [2023-12-16 17:56:48,217 INFO L226 Difference]: Without dead ends: 244 [2023-12-16 17:56:48,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:48,218 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 13 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:48,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 739 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-16 17:56:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-12-16 17:56:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 188 states have (on average 1.4680851063829787) internal successors, (276), 192 states have internal predecessors, (276), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-16 17:56:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 370 transitions. [2023-12-16 17:56:48,227 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 370 transitions. Word has length 56 [2023-12-16 17:56:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:48,227 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 370 transitions. [2023-12-16 17:56:48,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 370 transitions. [2023-12-16 17:56:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 17:56:48,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:48,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:48,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:48,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:48,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:48,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash 431791273, now seen corresponding path program 1 times [2023-12-16 17:56:48,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:48,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86913440] [2023-12-16 17:56:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:48,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:48,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:56:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:48,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:48,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 17:56:48,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:48,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86913440] [2023-12-16 17:56:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86913440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43216873] [2023-12-16 17:56:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:48,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:48,502 INFO L87 Difference]: Start difference. First operand 244 states and 370 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:48,539 INFO L93 Difference]: Finished difference Result 469 states and 731 transitions. [2023-12-16 17:56:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-12-16 17:56:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:48,541 INFO L225 Difference]: With dead ends: 469 [2023-12-16 17:56:48,541 INFO L226 Difference]: Without dead ends: 253 [2023-12-16 17:56:48,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:48,542 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 19 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 774 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-16 17:56:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2023-12-16 17:56:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 194 states have (on average 1.4639175257731958) internal successors, (284), 198 states have internal predecessors, (284), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-16 17:56:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 378 transitions. [2023-12-16 17:56:48,551 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 378 transitions. Word has length 56 [2023-12-16 17:56:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:48,551 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 378 transitions. [2023-12-16 17:56:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 378 transitions. [2023-12-16 17:56:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 17:56:48,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:48,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:48,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:48,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:48,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:48,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash 302487967, now seen corresponding path program 1 times [2023-12-16 17:56:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:48,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461762180] [2023-12-16 17:56:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:48,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:48,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:48,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:48,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:56:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:48,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:48,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:56:48,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:48,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:48,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461762180] [2023-12-16 17:56:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461762180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:48,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761097799] [2023-12-16 17:56:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:48,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:48,823 INFO L87 Difference]: Start difference. First operand 251 states and 378 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:48,870 INFO L93 Difference]: Finished difference Result 513 states and 783 transitions. [2023-12-16 17:56:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2023-12-16 17:56:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:48,871 INFO L225 Difference]: With dead ends: 513 [2023-12-16 17:56:48,871 INFO L226 Difference]: Without dead ends: 290 [2023-12-16 17:56:48,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:48,873 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 24 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:48,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 787 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-16 17:56:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2023-12-16 17:56:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 226 states have (on average 1.420353982300885) internal successors, (321), 230 states have internal predecessors, (321), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 17:56:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 421 transitions. [2023-12-16 17:56:48,889 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 421 transitions. Word has length 57 [2023-12-16 17:56:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:48,889 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 421 transitions. [2023-12-16 17:56:48,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:56:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 421 transitions. [2023-12-16 17:56:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 17:56:48,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:48,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 17:56:48,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:49,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:49,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:49,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -182873265, now seen corresponding path program 1 times [2023-12-16 17:56:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365304680] [2023-12-16 17:56:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:49,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:49,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 17:56:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:49,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:49,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 17:56:49,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:49,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:49,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365304680] [2023-12-16 17:56:49,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365304680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:49,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:49,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:56:49,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042500793] [2023-12-16 17:56:49,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:49,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:49,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:49,176 INFO L87 Difference]: Start difference. First operand 287 states and 421 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:56:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:49,198 INFO L93 Difference]: Finished difference Result 524 states and 782 transitions. [2023-12-16 17:56:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:49,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2023-12-16 17:56:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:49,200 INFO L225 Difference]: With dead ends: 524 [2023-12-16 17:56:49,200 INFO L226 Difference]: Without dead ends: 289 [2023-12-16 17:56:49,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:49,201 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:49,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1051 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-16 17:56:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-12-16 17:56:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 226 states have (on average 1.407079646017699) internal successors, (318), 230 states have internal predecessors, (318), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-16 17:56:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 418 transitions. [2023-12-16 17:56:49,210 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 418 transitions. Word has length 75 [2023-12-16 17:56:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:49,210 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 418 transitions. [2023-12-16 17:56:49,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:56:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 418 transitions. [2023-12-16 17:56:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-16 17:56:49,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:49,211 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:49,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:49,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:49,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:49,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash 497991807, now seen corresponding path program 1 times [2023-12-16 17:56:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:49,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912965943] [2023-12-16 17:56:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:49,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:49,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:49,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:49,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 17:56:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:49,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:49,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-16 17:56:49,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:49,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:49,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912965943] [2023-12-16 17:56:49,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912965943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:49,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622848608] [2023-12-16 17:56:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:49,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:49,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:49,499 INFO L87 Difference]: Start difference. First operand 287 states and 418 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:56:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:49,540 INFO L93 Difference]: Finished difference Result 511 states and 766 transitions. [2023-12-16 17:56:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 17:56:49,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2023-12-16 17:56:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:49,542 INFO L225 Difference]: With dead ends: 511 [2023-12-16 17:56:49,542 INFO L226 Difference]: Without dead ends: 281 [2023-12-16 17:56:49,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:49,544 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 15 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:49,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 747 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-16 17:56:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-16 17:56:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 221 states have (on average 1.3846153846153846) internal successors, (306), 225 states have internal predecessors, (306), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-16 17:56:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2023-12-16 17:56:49,553 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 104 [2023-12-16 17:56:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:49,554 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2023-12-16 17:56:49,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:56:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2023-12-16 17:56:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 17:56:49,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:49,555 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 17:56:49,560 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 [2023-12-16 17:56:49,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:49,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:49,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -861964875, now seen corresponding path program 1 times [2023-12-16 17:56:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:49,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854352109] [2023-12-16 17:56:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:49,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:49,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:49,760 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:49,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 17:56:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:49,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:49,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-16 17:56:49,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:49,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:49,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854352109] [2023-12-16 17:56:49,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854352109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:49,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:49,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:49,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852773321] [2023-12-16 17:56:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:49,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:49,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:49,876 INFO L87 Difference]: Start difference. First operand 281 states and 404 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:49,925 INFO L93 Difference]: Finished difference Result 508 states and 746 transitions. [2023-12-16 17:56:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:49,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 138 [2023-12-16 17:56:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:49,927 INFO L225 Difference]: With dead ends: 508 [2023-12-16 17:56:49,927 INFO L226 Difference]: Without dead ends: 264 [2023-12-16 17:56:49,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:49,929 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 35 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:49,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 708 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-16 17:56:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-16 17:56:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 207 states have (on average 1.3768115942028984) internal successors, (285), 211 states have internal predecessors, (285), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 17:56:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 377 transitions. [2023-12-16 17:56:49,964 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 377 transitions. Word has length 138 [2023-12-16 17:56:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:49,965 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 377 transitions. [2023-12-16 17:56:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 377 transitions. [2023-12-16 17:56:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 17:56:49,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:49,967 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 17:56:49,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-16 17:56:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:50,170 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:50,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1527192299, now seen corresponding path program 1 times [2023-12-16 17:56:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616195993] [2023-12-16 17:56:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:50,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:50,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:50,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:50,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 17:56:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:50,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:50,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-16 17:56:50,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:50,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616195993] [2023-12-16 17:56:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616195993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:50,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:50,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:50,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750804878] [2023-12-16 17:56:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:50,268 INFO L87 Difference]: Start difference. First operand 264 states and 377 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:50,312 INFO L93 Difference]: Finished difference Result 474 states and 692 transitions. [2023-12-16 17:56:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 142 [2023-12-16 17:56:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:50,313 INFO L225 Difference]: With dead ends: 474 [2023-12-16 17:56:50,313 INFO L226 Difference]: Without dead ends: 245 [2023-12-16 17:56:50,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:50,314 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 30 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:50,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 712 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-16 17:56:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-12-16 17:56:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 191 states have (on average 1.3717277486910995) internal successors, (262), 195 states have internal predecessors, (262), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 348 transitions. [2023-12-16 17:56:50,322 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 348 transitions. Word has length 142 [2023-12-16 17:56:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:50,322 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 348 transitions. [2023-12-16 17:56:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 348 transitions. [2023-12-16 17:56:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 17:56:50,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:50,323 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 17:56:50,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:50,524 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 [2023-12-16 17:56:50,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:50,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash -648572484, now seen corresponding path program 1 times [2023-12-16 17:56:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:50,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305905265] [2023-12-16 17:56:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:50,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:50,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:50,526 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) [2023-12-16 17:56:50,526 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 [2023-12-16 17:56:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:50,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:50,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-16 17:56:50,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:50,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305905265] [2023-12-16 17:56:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305905265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:50,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728864634] [2023-12-16 17:56:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:50,627 INFO L87 Difference]: Start difference. First operand 245 states and 348 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:50,673 INFO L93 Difference]: Finished difference Result 453 states and 656 transitions. [2023-12-16 17:56:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:50,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2023-12-16 17:56:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:50,678 INFO L225 Difference]: With dead ends: 453 [2023-12-16 17:56:50,678 INFO L226 Difference]: Without dead ends: 265 [2023-12-16 17:56:50,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:50,679 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 39 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:50,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 700 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-16 17:56:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-16 17:56:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 210 states have (on average 1.3428571428571427) internal successors, (282), 214 states have internal predecessors, (282), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 368 transitions. [2023-12-16 17:56:50,687 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 368 transitions. Word has length 145 [2023-12-16 17:56:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:50,688 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 368 transitions. [2023-12-16 17:56:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 368 transitions. [2023-12-16 17:56:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 17:56:50,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:50,689 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 17:56:50,693 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 [2023-12-16 17:56:50,891 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 [2023-12-16 17:56:50,891 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 368269504, now seen corresponding path program 2 times [2023-12-16 17:56:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936030247] [2023-12-16 17:56:50,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:56:50,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:50,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:50,893 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:56:50,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 17:56:50,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 17:56:50,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:56:50,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:50,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-16 17:56:50,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:50,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936030247] [2023-12-16 17:56:50,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936030247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:50,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:50,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:50,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829001114] [2023-12-16 17:56:50,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:50,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:50,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:50,959 INFO L87 Difference]: Start difference. First operand 265 states and 368 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 17:56:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:50,984 INFO L93 Difference]: Finished difference Result 410 states and 589 transitions. [2023-12-16 17:56:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 145 [2023-12-16 17:56:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:50,986 INFO L225 Difference]: With dead ends: 410 [2023-12-16 17:56:50,986 INFO L226 Difference]: Without dead ends: 271 [2023-12-16 17:56:50,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:50,987 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 6 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:50,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 761 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-16 17:56:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2023-12-16 17:56:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.3380281690140845) internal successors, (285), 217 states have internal predecessors, (285), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 371 transitions. [2023-12-16 17:56:50,995 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 371 transitions. Word has length 145 [2023-12-16 17:56:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:50,995 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 371 transitions. [2023-12-16 17:56:50,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 17:56:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 371 transitions. [2023-12-16 17:56:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 17:56:50,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:50,997 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 17:56:50,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:51,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:51,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:51,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1846152261, now seen corresponding path program 1 times [2023-12-16 17:56:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:51,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813565337] [2023-12-16 17:56:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:51,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:51,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:51,200 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) [2023-12-16 17:56:51,201 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 [2023-12-16 17:56:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:51,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:51,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-16 17:56:51,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:51,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:51,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813565337] [2023-12-16 17:56:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813565337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:51,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:51,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:56:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224509354] [2023-12-16 17:56:51,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:51,323 INFO L87 Difference]: Start difference. First operand 269 states and 371 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:56:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:51,341 INFO L93 Difference]: Finished difference Result 456 states and 642 transitions. [2023-12-16 17:56:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 152 [2023-12-16 17:56:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:51,343 INFO L225 Difference]: With dead ends: 456 [2023-12-16 17:56:51,343 INFO L226 Difference]: Without dead ends: 271 [2023-12-16 17:56:51,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:51,344 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:51,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1029 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-16 17:56:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2023-12-16 17:56:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.323943661971831) internal successors, (282), 217 states have internal predecessors, (282), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 368 transitions. [2023-12-16 17:56:51,352 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 368 transitions. Word has length 152 [2023-12-16 17:56:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:51,352 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 368 transitions. [2023-12-16 17:56:51,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:56:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 368 transitions. [2023-12-16 17:56:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-16 17:56:51,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:51,354 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:51,373 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 [2023-12-16 17:56:51,557 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 [2023-12-16 17:56:51,557 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:51,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1759176345, now seen corresponding path program 1 times [2023-12-16 17:56:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:51,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334893810] [2023-12-16 17:56:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:51,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:51,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:51,559 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) [2023-12-16 17:56:51,585 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 [2023-12-16 17:56:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:51,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:51,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-12-16 17:56:51,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:51,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334893810] [2023-12-16 17:56:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334893810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:56:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272415429] [2023-12-16 17:56:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:51,698 INFO L87 Difference]: Start difference. First operand 269 states and 368 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:56:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:51,722 INFO L93 Difference]: Finished difference Result 419 states and 592 transitions. [2023-12-16 17:56:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:51,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 185 [2023-12-16 17:56:51,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:51,724 INFO L225 Difference]: With dead ends: 419 [2023-12-16 17:56:51,724 INFO L226 Difference]: Without dead ends: 269 [2023-12-16 17:56:51,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:51,725 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:51,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1026 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-16 17:56:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-12-16 17:56:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.3098591549295775) internal successors, (279), 217 states have internal predecessors, (279), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 365 transitions. [2023-12-16 17:56:51,736 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 365 transitions. Word has length 185 [2023-12-16 17:56:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:51,736 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 365 transitions. [2023-12-16 17:56:51,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:56:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 365 transitions. [2023-12-16 17:56:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 17:56:51,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:51,739 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:51,744 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 [2023-12-16 17:56:51,945 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 [2023-12-16 17:56:51,945 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:51,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1291056908, now seen corresponding path program 1 times [2023-12-16 17:56:51,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:51,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24128958] [2023-12-16 17:56:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:51,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:51,947 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) [2023-12-16 17:56:51,975 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 [2023-12-16 17:56:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:52,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:52,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2023-12-16 17:56:52,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 17:56:52,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24128958] [2023-12-16 17:56:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24128958] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:56:52,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:56:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-16 17:56:52,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621471501] [2023-12-16 17:56:52,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:52,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:52,180 INFO L87 Difference]: Start difference. First operand 269 states and 365 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 17:56:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:52,208 INFO L93 Difference]: Finished difference Result 444 states and 621 transitions. [2023-12-16 17:56:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 17:56:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 192 [2023-12-16 17:56:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:52,209 INFO L225 Difference]: With dead ends: 444 [2023-12-16 17:56:52,209 INFO L226 Difference]: Without dead ends: 269 [2023-12-16 17:56:52,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:52,210 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:52,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 705 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-16 17:56:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-12-16 17:56:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.2816901408450705) internal successors, (273), 217 states have internal predecessors, (273), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 359 transitions. [2023-12-16 17:56:52,220 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 359 transitions. Word has length 192 [2023-12-16 17:56:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:52,221 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 359 transitions. [2023-12-16 17:56:52,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 17:56:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 359 transitions. [2023-12-16 17:56:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-16 17:56:52,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:52,223 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 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, 3, 3, 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] [2023-12-16 17:56:52,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:52,426 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 [2023-12-16 17:56:52,426 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:52,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2053627783, now seen corresponding path program 1 times [2023-12-16 17:56:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318357050] [2023-12-16 17:56:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:52,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:52,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:52,428 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) [2023-12-16 17:56:52,431 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 [2023-12-16 17:56:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:52,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:52,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 17:56:52,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:52,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318357050] [2023-12-16 17:56:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318357050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:52,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:52,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386579740] [2023-12-16 17:56:52,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:52,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:52,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:52,575 INFO L87 Difference]: Start difference. First operand 269 states and 359 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 17:56:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:52,600 INFO L93 Difference]: Finished difference Result 419 states and 584 transitions. [2023-12-16 17:56:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 216 [2023-12-16 17:56:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:52,601 INFO L225 Difference]: With dead ends: 419 [2023-12-16 17:56:52,601 INFO L226 Difference]: Without dead ends: 276 [2023-12-16 17:56:52,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:52,602 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 7 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:52,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 757 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-16 17:56:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2023-12-16 17:56:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 217 states have (on average 1.2764976958525345) internal successors, (277), 221 states have internal predecessors, (277), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 17:56:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 363 transitions. [2023-12-16 17:56:52,610 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 363 transitions. Word has length 216 [2023-12-16 17:56:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:52,610 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 363 transitions. [2023-12-16 17:56:52,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 17:56:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 363 transitions. [2023-12-16 17:56:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-16 17:56:52,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:52,612 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:52,617 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 [2023-12-16 17:56:52,815 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 [2023-12-16 17:56:52,815 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:52,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash 930837717, now seen corresponding path program 1 times [2023-12-16 17:56:52,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:52,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467819078] [2023-12-16 17:56:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:52,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:52,817 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) [2023-12-16 17:56:52,821 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 [2023-12-16 17:56:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:52,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:52,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-16 17:56:52,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:52,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:52,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467819078] [2023-12-16 17:56:52,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467819078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:52,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:52,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:52,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681069669] [2023-12-16 17:56:52,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:52,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:52,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:52,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:52,959 INFO L87 Difference]: Start difference. First operand 274 states and 363 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 17:56:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:52,987 INFO L93 Difference]: Finished difference Result 421 states and 582 transitions. [2023-12-16 17:56:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 17:56:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 224 [2023-12-16 17:56:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:52,989 INFO L225 Difference]: With dead ends: 421 [2023-12-16 17:56:52,989 INFO L226 Difference]: Without dead ends: 273 [2023-12-16 17:56:52,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:52,990 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 7 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:52,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 743 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-16 17:56:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-16 17:56:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 217 states have (on average 1.262672811059908) internal successors, (274), 220 states have internal predecessors, (274), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 17:56:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 358 transitions. [2023-12-16 17:56:52,998 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 358 transitions. Word has length 224 [2023-12-16 17:56:52,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:52,998 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 358 transitions. [2023-12-16 17:56:52,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 17:56:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 358 transitions. [2023-12-16 17:56:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-16 17:56:53,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:53,000 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 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, 3, 3, 3, 3, 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] [2023-12-16 17:56:53,015 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 (21)] Forceful destruction successful, exit code 0 [2023-12-16 17:56:53,203 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 [2023-12-16 17:56:53,204 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:53,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1128030971, now seen corresponding path program 1 times [2023-12-16 17:56:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:53,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153216952] [2023-12-16 17:56:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:53,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:53,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:53,205 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) [2023-12-16 17:56:53,210 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 [2023-12-16 17:56:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:53,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:53,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-16 17:56:53,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:53,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153216952] [2023-12-16 17:56:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153216952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719683527] [2023-12-16 17:56:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:53,355 INFO L87 Difference]: Start difference. First operand 273 states and 358 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 17:56:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:53,366 INFO L93 Difference]: Finished difference Result 419 states and 571 transitions. [2023-12-16 17:56:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:53,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 231 [2023-12-16 17:56:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:53,368 INFO L225 Difference]: With dead ends: 419 [2023-12-16 17:56:53,368 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 17:56:53,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:53,369 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:53,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 497 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 17:56:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-12-16 17:56:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 217 states have (on average 1.2580645161290323) internal successors, (273), 219 states have internal predecessors, (273), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 17:56:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 355 transitions. [2023-12-16 17:56:53,377 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 355 transitions. Word has length 231 [2023-12-16 17:56:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 355 transitions. [2023-12-16 17:56:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 17:56:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 355 transitions. [2023-12-16 17:56:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-16 17:56:53,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:53,379 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 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, 3, 3, 3, 3, 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] [2023-12-16 17:56:53,384 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 [2023-12-16 17:56:53,587 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 [2023-12-16 17:56:53,587 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:53,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash -162714812, now seen corresponding path program 1 times [2023-12-16 17:56:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379833320] [2023-12-16 17:56:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:53,589 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) [2023-12-16 17:56:53,590 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 [2023-12-16 17:56:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:53,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:53,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-16 17:56:53,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:53,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:53,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379833320] [2023-12-16 17:56:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379833320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:53,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696591888] [2023-12-16 17:56:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:53,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:53,966 INFO L87 Difference]: Start difference. First operand 272 states and 355 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 17:56:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:54,156 INFO L93 Difference]: Finished difference Result 603 states and 820 transitions. [2023-12-16 17:56:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:56:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 234 [2023-12-16 17:56:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:54,159 INFO L225 Difference]: With dead ends: 603 [2023-12-16 17:56:54,159 INFO L226 Difference]: Without dead ends: 457 [2023-12-16 17:56:54,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:54,160 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 514 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:54,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 759 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-16 17:56:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 451. [2023-12-16 17:56:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 353 states have (on average 1.3087818696883853) internal successors, (462), 355 states have internal predecessors, (462), 70 states have call successors, (70), 27 states have call predecessors, (70), 27 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-16 17:56:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 602 transitions. [2023-12-16 17:56:54,189 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 602 transitions. Word has length 234 [2023-12-16 17:56:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:54,190 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 602 transitions. [2023-12-16 17:56:54,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 17:56:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 602 transitions. [2023-12-16 17:56:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-16 17:56:54,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:54,192 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-16 17:56:54,206 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 [2023-12-16 17:56:54,395 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 [2023-12-16 17:56:54,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:54,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2125325853, now seen corresponding path program 1 times [2023-12-16 17:56:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327215655] [2023-12-16 17:56:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:54,397 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 [2023-12-16 17:56:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:54,398 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) [2023-12-16 17:56:54,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 17:56:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:54,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:56:54,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2023-12-16 17:56:54,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:54,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:54,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327215655] [2023-12-16 17:56:54,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327215655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:54,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:54,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949711867] [2023-12-16 17:56:54,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:54,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:54,556 INFO L87 Difference]: Start difference. First operand 451 states and 602 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:56:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:54,595 INFO L93 Difference]: Finished difference Result 1012 states and 1395 transitions. [2023-12-16 17:56:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 264 [2023-12-16 17:56:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:54,599 INFO L225 Difference]: With dead ends: 1012 [2023-12-16 17:56:54,599 INFO L226 Difference]: Without dead ends: 738 [2023-12-16 17:56:54,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:54,601 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 167 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 523 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 [2023-12-16 17:56:54,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 523 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-12-16 17:56:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 644. [2023-12-16 17:56:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 502 states have (on average 1.3366533864541832) internal successors, (671), 508 states have internal predecessors, (671), 100 states have call successors, (100), 41 states have call predecessors, (100), 41 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 17:56:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 871 transitions. [2023-12-16 17:56:54,629 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 871 transitions. Word has length 264 [2023-12-16 17:56:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:54,629 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 871 transitions. [2023-12-16 17:56:54,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:56:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 871 transitions. [2023-12-16 17:56:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-16 17:56:54,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:54,631 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-16 17:56:54,637 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 [2023-12-16 17:56:54,835 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 [2023-12-16 17:56:54,835 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:54,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash 965816563, now seen corresponding path program 1 times [2023-12-16 17:56:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226392175] [2023-12-16 17:56:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:54,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:54,837 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) [2023-12-16 17:56:54,863 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 [2023-12-16 17:56:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:54,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:56:54,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-16 17:56:54,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:54,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:54,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226392175] [2023-12-16 17:56:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226392175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:54,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431531459] [2023-12-16 17:56:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:54,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:54,991 INFO L87 Difference]: Start difference. First operand 644 states and 871 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:56:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:55,065 INFO L93 Difference]: Finished difference Result 1503 states and 2086 transitions. [2023-12-16 17:56:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 265 [2023-12-16 17:56:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:55,069 INFO L225 Difference]: With dead ends: 1503 [2023-12-16 17:56:55,069 INFO L226 Difference]: Without dead ends: 1074 [2023-12-16 17:56:55,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:55,070 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 171 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 539 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 [2023-12-16 17:56:55,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 539 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-12-16 17:56:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 991. [2023-12-16 17:56:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 769 states have (on average 1.3576072821846554) internal successors, (1044), 783 states have internal predecessors, (1044), 154 states have call successors, (154), 67 states have call predecessors, (154), 67 states have return successors, (154), 144 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-16 17:56:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1352 transitions. [2023-12-16 17:56:55,111 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1352 transitions. Word has length 265 [2023-12-16 17:56:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:55,111 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1352 transitions. [2023-12-16 17:56:55,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:56:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1352 transitions. [2023-12-16 17:56:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-16 17:56:55,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:55,112 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-16 17:56:55,116 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 [2023-12-16 17:56:55,316 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 [2023-12-16 17:56:55,316 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:55,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash 542333624, now seen corresponding path program 1 times [2023-12-16 17:56:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:55,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779700841] [2023-12-16 17:56:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:55,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:55,318 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) [2023-12-16 17:56:55,318 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 [2023-12-16 17:56:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:55,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:56:55,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-12-16 17:56:55,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:55,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779700841] [2023-12-16 17:56:55,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779700841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:55,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:55,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509113846] [2023-12-16 17:56:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:55,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:55,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:55,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:55,466 INFO L87 Difference]: Start difference. First operand 991 states and 1352 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 17:56:55,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:55,561 INFO L93 Difference]: Finished difference Result 2279 states and 3178 transitions. [2023-12-16 17:56:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:55,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 266 [2023-12-16 17:56:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:55,566 INFO L225 Difference]: With dead ends: 2279 [2023-12-16 17:56:55,567 INFO L226 Difference]: Without dead ends: 1646 [2023-12-16 17:56:55,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:55,570 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 178 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 556 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 [2023-12-16 17:56:55,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 556 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2023-12-16 17:56:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1557. [2023-12-16 17:56:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1203 states have (on average 1.3798836242726518) internal successors, (1660), 1231 states have internal predecessors, (1660), 246 states have call successors, (246), 107 states have call predecessors, (246), 107 states have return successors, (246), 226 states have call predecessors, (246), 246 states have call successors, (246) [2023-12-16 17:56:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2152 transitions. [2023-12-16 17:56:55,645 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2152 transitions. Word has length 266 [2023-12-16 17:56:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:55,647 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2152 transitions. [2023-12-16 17:56:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 17:56:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2152 transitions. [2023-12-16 17:56:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-16 17:56:55,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:55,649 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-16 17:56:55,655 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 [2023-12-16 17:56:55,852 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 [2023-12-16 17:56:55,853 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:55,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash 147966838, now seen corresponding path program 1 times [2023-12-16 17:56:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001991725] [2023-12-16 17:56:55,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:55,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:55,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:55,855 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) [2023-12-16 17:56:55,864 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 [2023-12-16 17:56:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:55,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:55,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2023-12-16 17:56:56,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:56,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001991725] [2023-12-16 17:56:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001991725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:56,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:56,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:56:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731908996] [2023-12-16 17:56:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:56,006 INFO L87 Difference]: Start difference. First operand 1557 states and 2152 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:56:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:56,119 INFO L93 Difference]: Finished difference Result 2511 states and 3506 transitions. [2023-12-16 17:56:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:56,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 266 [2023-12-16 17:56:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:56,124 INFO L225 Difference]: With dead ends: 2511 [2023-12-16 17:56:56,124 INFO L226 Difference]: Without dead ends: 1529 [2023-12-16 17:56:56,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:56,126 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 2 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:56,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 957 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-12-16 17:56:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1529. [2023-12-16 17:56:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1180 states have (on average 1.373728813559322) internal successors, (1621), 1205 states have internal predecessors, (1621), 244 states have call successors, (244), 105 states have call predecessors, (244), 104 states have return successors, (243), 225 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-16 17:56:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2108 transitions. [2023-12-16 17:56:56,200 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2108 transitions. Word has length 266 [2023-12-16 17:56:56,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:56,200 INFO L495 AbstractCegarLoop]: Abstraction has 1529 states and 2108 transitions. [2023-12-16 17:56:56,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:56:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2108 transitions. [2023-12-16 17:56:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-16 17:56:56,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:56,202 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 3, 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] [2023-12-16 17:56:56,210 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 [2023-12-16 17:56:56,405 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 [2023-12-16 17:56:56,405 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:56,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1361167100, now seen corresponding path program 1 times [2023-12-16 17:56:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588365535] [2023-12-16 17:56:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:56,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:56,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:56,407 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) [2023-12-16 17:56:56,408 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 [2023-12-16 17:56:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:56,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:56,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2023-12-16 17:56:56,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:56,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588365535] [2023-12-16 17:56:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588365535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:56,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297029455] [2023-12-16 17:56:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:56,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:56,561 INFO L87 Difference]: Start difference. First operand 1529 states and 2108 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:56:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:56,685 INFO L93 Difference]: Finished difference Result 3118 states and 4316 transitions. [2023-12-16 17:56:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:56,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 271 [2023-12-16 17:56:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:56,691 INFO L225 Difference]: With dead ends: 3118 [2023-12-16 17:56:56,691 INFO L226 Difference]: Without dead ends: 1547 [2023-12-16 17:56:56,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:56,694 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 33 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:56,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 657 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-12-16 17:56:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1547. [2023-12-16 17:56:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1195 states have (on average 1.3489539748953976) internal successors, (1612), 1220 states have internal predecessors, (1612), 244 states have call successors, (244), 108 states have call predecessors, (244), 107 states have return successors, (243), 225 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-16 17:56:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2099 transitions. [2023-12-16 17:56:56,756 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2099 transitions. Word has length 271 [2023-12-16 17:56:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:56,757 INFO L495 AbstractCegarLoop]: Abstraction has 1547 states and 2099 transitions. [2023-12-16 17:56:56,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:56:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2099 transitions. [2023-12-16 17:56:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-16 17:56:56,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:56,758 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:56,772 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 [2023-12-16 17:56:56,962 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 [2023-12-16 17:56:56,962 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:56,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1383848971, now seen corresponding path program 1 times [2023-12-16 17:56:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694367064] [2023-12-16 17:56:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:56,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:56,964 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) [2023-12-16 17:56:56,980 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 [2023-12-16 17:56:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:57,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:56:57,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 54 proven. 100 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-12-16 17:56:57,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 20 proven. 144 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2023-12-16 17:56:57,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:57,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694367064] [2023-12-16 17:56:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694367064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:56:57,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:56:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2023-12-16 17:56:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485974324] [2023-12-16 17:56:57,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:56:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 17:56:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 17:56:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:56:57,801 INFO L87 Difference]: Start difference. First operand 1547 states and 2099 transitions. Second operand has 21 states, 21 states have (on average 7.285714285714286) internal successors, (153), 18 states have internal predecessors, (153), 5 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) [2023-12-16 17:56:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:59,080 INFO L93 Difference]: Finished difference Result 3045 states and 4211 transitions. [2023-12-16 17:56:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 17:56:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.285714285714286) internal successors, (153), 18 states have internal predecessors, (153), 5 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) Word has length 272 [2023-12-16 17:56:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:59,086 INFO L225 Difference]: With dead ends: 3045 [2023-12-16 17:56:59,086 INFO L226 Difference]: Without dead ends: 1875 [2023-12-16 17:56:59,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 528 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=1104, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:56:59,089 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 483 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:59,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2919 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 17:56:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2023-12-16 17:56:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1591. [2023-12-16 17:56:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1231 states have (on average 1.338748984565394) internal successors, (1648), 1253 states have internal predecessors, (1648), 241 states have call successors, (241), 115 states have call predecessors, (241), 118 states have return successors, (248), 229 states have call predecessors, (248), 240 states have call successors, (248) [2023-12-16 17:56:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2137 transitions. [2023-12-16 17:56:59,168 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2137 transitions. Word has length 272 [2023-12-16 17:56:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:59,168 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2137 transitions. [2023-12-16 17:56:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.285714285714286) internal successors, (153), 18 states have internal predecessors, (153), 5 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) [2023-12-16 17:56:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2137 transitions. [2023-12-16 17:56:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-16 17:56:59,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:59,170 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:59,173 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 [2023-12-16 17:56:59,373 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 [2023-12-16 17:56:59,374 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:59,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -422234954, now seen corresponding path program 1 times [2023-12-16 17:56:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:59,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117480364] [2023-12-16 17:56:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:59,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:59,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:59,376 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) [2023-12-16 17:56:59,376 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 [2023-12-16 17:56:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:59,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:59,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2023-12-16 17:56:59,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:59,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:59,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117480364] [2023-12-16 17:56:59,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117480364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:59,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:59,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:59,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725459208] [2023-12-16 17:56:59,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:59,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:59,522 INFO L87 Difference]: Start difference. First operand 1591 states and 2137 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:56:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:59,661 INFO L93 Difference]: Finished difference Result 2875 states and 3930 transitions. [2023-12-16 17:56:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 272 [2023-12-16 17:56:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:59,667 INFO L225 Difference]: With dead ends: 2875 [2023-12-16 17:56:59,667 INFO L226 Difference]: Without dead ends: 1575 [2023-12-16 17:56:59,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:59,669 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 31 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:59,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 657 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2023-12-16 17:56:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2023-12-16 17:56:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1219 states have (on average 1.3166529942575882) internal successors, (1605), 1241 states have internal predecessors, (1605), 241 states have call successors, (241), 115 states have call predecessors, (241), 114 states have return successors, (240), 225 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-16 17:56:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2086 transitions. [2023-12-16 17:56:59,753 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2086 transitions. Word has length 272 [2023-12-16 17:56:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:59,754 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2086 transitions. [2023-12-16 17:56:59,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:56:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2086 transitions. [2023-12-16 17:56:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-16 17:56:59,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:59,755 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 7, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:59,772 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 [2023-12-16 17:56:59,959 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 [2023-12-16 17:56:59,959 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:59,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash 340210512, now seen corresponding path program 1 times [2023-12-16 17:56:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992685144] [2023-12-16 17:56:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:59,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:59,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:59,961 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) [2023-12-16 17:56:59,962 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 [2023-12-16 17:57:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:00,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:57:00,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 263 proven. 113 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-16 17:57:00,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 65 proven. 126 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2023-12-16 17:57:00,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992685144] [2023-12-16 17:57:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992685144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:00,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2023-12-16 17:57:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334306671] [2023-12-16 17:57:00,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 17:57:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 17:57:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:57:00,732 INFO L87 Difference]: Start difference. First operand 1575 states and 2086 transitions. Second operand has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 18 states have internal predecessors, (162), 5 states have call successors, (35), 8 states have call predecessors, (35), 14 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) [2023-12-16 17:57:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:01,854 INFO L93 Difference]: Finished difference Result 2902 states and 3911 transitions. [2023-12-16 17:57:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 17:57:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 18 states have internal predecessors, (162), 5 states have call successors, (35), 8 states have call predecessors, (35), 14 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) Word has length 282 [2023-12-16 17:57:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:01,861 INFO L225 Difference]: With dead ends: 2902 [2023-12-16 17:57:01,861 INFO L226 Difference]: Without dead ends: 1740 [2023-12-16 17:57:01,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 548 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=1104, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:57:01,864 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 503 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:01,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 2230 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:57:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2023-12-16 17:57:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1395. [2023-12-16 17:57:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1088 states have (on average 1.3125) internal successors, (1428), 1108 states have internal predecessors, (1428), 203 states have call successors, (203), 104 states have call predecessors, (203), 103 states have return successors, (202), 189 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-16 17:57:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1833 transitions. [2023-12-16 17:57:01,976 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1833 transitions. Word has length 282 [2023-12-16 17:57:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:01,976 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1833 transitions. [2023-12-16 17:57:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.714285714285714) internal successors, (162), 18 states have internal predecessors, (162), 5 states have call successors, (35), 8 states have call predecessors, (35), 14 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) [2023-12-16 17:57:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1833 transitions. [2023-12-16 17:57:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-16 17:57:01,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:01,978 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:01,999 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 [2023-12-16 17:57:02,182 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 [2023-12-16 17:57:02,183 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:02,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:02,183 INFO L85 PathProgramCache]: Analyzing trace with hash -408395491, now seen corresponding path program 1 times [2023-12-16 17:57:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:02,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932835748] [2023-12-16 17:57:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:02,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:02,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:02,184 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) [2023-12-16 17:57:02,185 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 [2023-12-16 17:57:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:02,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 17:57:02,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 373 proven. 82 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-12-16 17:57:02,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 119 proven. 80 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-12-16 17:57:02,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932835748] [2023-12-16 17:57:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932835748] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:02,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:02,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2023-12-16 17:57:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414539858] [2023-12-16 17:57:02,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:57:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:02,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:57:02,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:57:02,847 INFO L87 Difference]: Start difference. First operand 1395 states and 1833 transitions. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (35), 6 states have call predecessors, (35), 12 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) [2023-12-16 17:57:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:03,991 INFO L93 Difference]: Finished difference Result 2583 states and 3474 transitions. [2023-12-16 17:57:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 17:57:03,991 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (35), 6 states have call predecessors, (35), 12 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) Word has length 293 [2023-12-16 17:57:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:03,997 INFO L225 Difference]: With dead ends: 2583 [2023-12-16 17:57:03,997 INFO L226 Difference]: Without dead ends: 1561 [2023-12-16 17:57:03,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 571 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 17:57:04,003 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 416 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:04,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 2928 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:57:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-12-16 17:57:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1284. [2023-12-16 17:57:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1007 states have (on average 1.307845084409136) internal successors, (1317), 1025 states have internal predecessors, (1317), 180 states have call successors, (180), 97 states have call predecessors, (180), 96 states have return successors, (179), 168 states have call predecessors, (179), 179 states have call successors, (179) [2023-12-16 17:57:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1676 transitions. [2023-12-16 17:57:04,072 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1676 transitions. Word has length 293 [2023-12-16 17:57:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:04,073 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1676 transitions. [2023-12-16 17:57:04,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (35), 6 states have call predecessors, (35), 12 states have return successors, (35), 7 states have call predecessors, (35), 5 states have call successors, (35) [2023-12-16 17:57:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1676 transitions. [2023-12-16 17:57:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-16 17:57:04,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:04,074 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:04,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:04,277 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 [2023-12-16 17:57:04,278 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:04,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash -63806027, now seen corresponding path program 1 times [2023-12-16 17:57:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:04,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061856309] [2023-12-16 17:57:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:04,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:04,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:04,280 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) [2023-12-16 17:57:04,306 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 [2023-12-16 17:57:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:04,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:57:04,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-16 17:57:04,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:04,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061856309] [2023-12-16 17:57:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061856309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:04,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:04,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:57:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344285993] [2023-12-16 17:57:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:57:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:57:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:57:04,460 INFO L87 Difference]: Start difference. First operand 1284 states and 1676 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-16 17:57:04,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:04,689 INFO L93 Difference]: Finished difference Result 2798 states and 3928 transitions. [2023-12-16 17:57:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:57:04,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 302 [2023-12-16 17:57:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:04,697 INFO L225 Difference]: With dead ends: 2798 [2023-12-16 17:57:04,697 INFO L226 Difference]: Without dead ends: 1877 [2023-12-16 17:57:04,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:57:04,699 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 124 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:04,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1773 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:57:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2023-12-16 17:57:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1375. [2023-12-16 17:57:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1080 states have (on average 1.3185185185185184) internal successors, (1424), 1098 states have internal predecessors, (1424), 198 states have call successors, (198), 97 states have call predecessors, (198), 96 states have return successors, (197), 186 states have call predecessors, (197), 197 states have call successors, (197) [2023-12-16 17:57:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1819 transitions. [2023-12-16 17:57:04,783 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1819 transitions. Word has length 302 [2023-12-16 17:57:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:04,784 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1819 transitions. [2023-12-16 17:57:04,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-16 17:57:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1819 transitions. [2023-12-16 17:57:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-16 17:57:04,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:04,785 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:04,789 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 [2023-12-16 17:57:04,989 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 [2023-12-16 17:57:04,989 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:04,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:04,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1894221007, now seen corresponding path program 1 times [2023-12-16 17:57:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494088588] [2023-12-16 17:57:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:04,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:04,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:04,991 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) [2023-12-16 17:57:04,997 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 [2023-12-16 17:57:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:05,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 17:57:05,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 27 proven. 174 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-16 17:57:05,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-16 17:57:05,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494088588] [2023-12-16 17:57:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494088588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:05,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:05,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-16 17:57:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805738352] [2023-12-16 17:57:05,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:57:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:57:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:57:05,798 INFO L87 Difference]: Start difference. First operand 1375 states and 1819 transitions. Second operand has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 17 states have internal predecessors, (205), 7 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 9 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-16 17:57:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:07,618 INFO L93 Difference]: Finished difference Result 5165 states and 7502 transitions. [2023-12-16 17:57:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 17:57:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 17 states have internal predecessors, (205), 7 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 9 states have call predecessors, (40), 7 states have call successors, (40) Word has length 302 [2023-12-16 17:57:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:07,635 INFO L225 Difference]: With dead ends: 5165 [2023-12-16 17:57:07,636 INFO L226 Difference]: Without dead ends: 4146 [2023-12-16 17:57:07,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=347, Invalid=1909, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 17:57:07,639 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1842 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:07,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 3519 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 17:57:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2023-12-16 17:57:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 2955. [2023-12-16 17:57:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2282 states have (on average 1.3146362839614374) internal successors, (3000), 2320 states have internal predecessors, (3000), 456 states have call successors, (456), 208 states have call predecessors, (456), 216 states have return successors, (563), 433 states have call predecessors, (563), 455 states have call successors, (563) [2023-12-16 17:57:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4019 transitions. [2023-12-16 17:57:07,854 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4019 transitions. Word has length 302 [2023-12-16 17:57:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:07,854 INFO L495 AbstractCegarLoop]: Abstraction has 2955 states and 4019 transitions. [2023-12-16 17:57:07,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 17 states have internal predecessors, (205), 7 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 9 states have call predecessors, (40), 7 states have call successors, (40) [2023-12-16 17:57:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4019 transitions. [2023-12-16 17:57:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-16 17:57:07,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:07,856 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:07,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:08,060 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 [2023-12-16 17:57:08,060 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:08,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1007166159, now seen corresponding path program 1 times [2023-12-16 17:57:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773988826] [2023-12-16 17:57:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:08,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:08,062 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) [2023-12-16 17:57:08,080 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 [2023-12-16 17:57:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:08,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:57:08,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 40 proven. 159 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-16 17:57:08,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-16 17:57:08,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:08,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773988826] [2023-12-16 17:57:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773988826] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:08,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:08,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2023-12-16 17:57:08,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429141666] [2023-12-16 17:57:08,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:08,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:57:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:57:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:57:08,759 INFO L87 Difference]: Start difference. First operand 2955 states and 4019 transitions. Second operand has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 15 states have internal predecessors, (201), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 8 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-16 17:57:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:10,414 INFO L93 Difference]: Finished difference Result 9568 states and 13755 transitions. [2023-12-16 17:57:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 17:57:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 15 states have internal predecessors, (201), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 8 states have call predecessors, (40), 6 states have call successors, (40) Word has length 302 [2023-12-16 17:57:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:10,436 INFO L225 Difference]: With dead ends: 9568 [2023-12-16 17:57:10,436 INFO L226 Difference]: Without dead ends: 6978 [2023-12-16 17:57:10,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 17:57:10,441 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1367 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:10,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 3426 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:57:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2023-12-16 17:57:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 3600. [2023-12-16 17:57:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 2777 states have (on average 1.3204897371263953) internal successors, (3667), 2821 states have internal predecessors, (3667), 563 states have call successors, (563), 247 states have call predecessors, (563), 259 states have return successors, (718), 538 states have call predecessors, (718), 562 states have call successors, (718) [2023-12-16 17:57:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4948 transitions. [2023-12-16 17:57:10,738 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4948 transitions. Word has length 302 [2023-12-16 17:57:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:10,739 INFO L495 AbstractCegarLoop]: Abstraction has 3600 states and 4948 transitions. [2023-12-16 17:57:10,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 15 states have internal predecessors, (201), 6 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (40), 8 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-16 17:57:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4948 transitions. [2023-12-16 17:57:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-16 17:57:10,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:10,741 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:10,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:10,944 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 [2023-12-16 17:57:10,944 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:10,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash 802525098, now seen corresponding path program 1 times [2023-12-16 17:57:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57085987] [2023-12-16 17:57:10,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:10,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:10,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:10,946 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) [2023-12-16 17:57:10,956 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 [2023-12-16 17:57:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:11,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:57:11,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-12-16 17:57:11,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:11,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57085987] [2023-12-16 17:57:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57085987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:11,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:57:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142811821] [2023-12-16 17:57:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:57:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:57:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:57:11,108 INFO L87 Difference]: Start difference. First operand 3600 states and 4948 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 17:57:11,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:11,433 INFO L93 Difference]: Finished difference Result 6980 states and 9629 transitions. [2023-12-16 17:57:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:57:11,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 303 [2023-12-16 17:57:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:11,445 INFO L225 Difference]: With dead ends: 6980 [2023-12-16 17:57:11,445 INFO L226 Difference]: Without dead ends: 3509 [2023-12-16 17:57:11,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:57:11,450 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 8 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:11,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 674 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:57:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2023-12-16 17:57:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3509. [2023-12-16 17:57:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2705 states have (on average 1.301293900184843) internal successors, (3520), 2763 states have internal predecessors, (3520), 536 states have call successors, (536), 268 states have call predecessors, (536), 267 states have return successors, (535), 484 states have call predecessors, (535), 535 states have call successors, (535) [2023-12-16 17:57:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4591 transitions. [2023-12-16 17:57:11,730 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4591 transitions. Word has length 303 [2023-12-16 17:57:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:11,731 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 4591 transitions. [2023-12-16 17:57:11,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 17:57:11,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4591 transitions. [2023-12-16 17:57:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-12-16 17:57:11,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:11,733 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:11,737 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 [2023-12-16 17:57:11,936 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 [2023-12-16 17:57:11,937 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:11,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1030217623, now seen corresponding path program 1 times [2023-12-16 17:57:11,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:11,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470639969] [2023-12-16 17:57:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:11,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:11,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:11,940 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) [2023-12-16 17:57:11,968 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 [2023-12-16 17:57:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:12,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:57:12,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-12-16 17:57:12,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:12,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470639969] [2023-12-16 17:57:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470639969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:12,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:57:12,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370532796] [2023-12-16 17:57:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:12,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:57:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:57:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:57:12,142 INFO L87 Difference]: Start difference. First operand 3509 states and 4591 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 17:57:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:12,543 INFO L93 Difference]: Finished difference Result 5468 states and 7737 transitions. [2023-12-16 17:57:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:57:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 320 [2023-12-16 17:57:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:12,557 INFO L225 Difference]: With dead ends: 5468 [2023-12-16 17:57:12,557 INFO L226 Difference]: Without dead ends: 5466 [2023-12-16 17:57:12,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:57:12,560 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 166 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:12,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1669 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:57:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2023-12-16 17:57:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 3635. [2023-12-16 17:57:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2789 states have (on average 1.2922194334887056) internal successors, (3604), 2868 states have internal predecessors, (3604), 557 states have call successors, (557), 289 states have call predecessors, (557), 288 states have return successors, (556), 484 states have call predecessors, (556), 556 states have call successors, (556) [2023-12-16 17:57:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4717 transitions. [2023-12-16 17:57:12,867 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4717 transitions. Word has length 320 [2023-12-16 17:57:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:12,867 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 4717 transitions. [2023-12-16 17:57:12,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-16 17:57:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4717 transitions. [2023-12-16 17:57:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-16 17:57:12,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:12,869 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:12,875 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 [2023-12-16 17:57:13,073 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 [2023-12-16 17:57:13,074 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -542909286, now seen corresponding path program 1 times [2023-12-16 17:57:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435116807] [2023-12-16 17:57:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:13,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:13,075 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) [2023-12-16 17:57:13,076 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 [2023-12-16 17:57:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:13,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:57:13,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 382 proven. 77 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-16 17:57:13,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:13,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435116807] [2023-12-16 17:57:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435116807] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 17:57:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [887435416] [2023-12-16 17:57:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 17:57:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 17:57:13,737 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 17:57:13,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-16 17:57:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:13,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:57:13,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 382 proven. 77 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-16 17:57:14,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [887435416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 17:57:14,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-12-16 17:57:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467697284] [2023-12-16 17:57:14,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 17:57:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 17:57:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:57:14,288 INFO L87 Difference]: Start difference. First operand 3635 states and 4717 transitions. Second operand has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 9 states have internal predecessors, (145), 5 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2023-12-16 17:57:14,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:14,780 INFO L93 Difference]: Finished difference Result 7111 states and 9300 transitions. [2023-12-16 17:57:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:57:14,780 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 9 states have internal predecessors, (145), 5 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) Word has length 328 [2023-12-16 17:57:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:14,789 INFO L225 Difference]: With dead ends: 7111 [2023-12-16 17:57:14,790 INFO L226 Difference]: Without dead ends: 3846 [2023-12-16 17:57:14,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 988 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:57:14,795 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 189 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:14,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2748 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:57:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2023-12-16 17:57:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3644. [2023-12-16 17:57:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2796 states have (on average 1.2914878397711016) internal successors, (3611), 2875 states have internal predecessors, (3611), 557 states have call successors, (557), 290 states have call predecessors, (557), 290 states have return successors, (557), 485 states have call predecessors, (557), 556 states have call successors, (557) [2023-12-16 17:57:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4725 transitions. [2023-12-16 17:57:15,128 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4725 transitions. Word has length 328 [2023-12-16 17:57:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:15,128 INFO L495 AbstractCegarLoop]: Abstraction has 3644 states and 4725 transitions. [2023-12-16 17:57:15,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 9 states have internal predecessors, (145), 5 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2023-12-16 17:57:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4725 transitions. [2023-12-16 17:57:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-16 17:57:15,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:15,131 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:15,135 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 [2023-12-16 17:57:15,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:15,535 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=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 17:57:15,535 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:15,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 418704731, now seen corresponding path program 1 times [2023-12-16 17:57:15,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:15,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793051263] [2023-12-16 17:57:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:15,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:15,537 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) [2023-12-16 17:57:15,538 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 [2023-12-16 17:57:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:15,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:57:15,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-12-16 17:57:15,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:15,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793051263] [2023-12-16 17:57:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793051263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:15,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:15,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:57:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817463672] [2023-12-16 17:57:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:57:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:57:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:57:15,743 INFO L87 Difference]: Start difference. First operand 3644 states and 4725 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-16 17:57:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:16,014 INFO L93 Difference]: Finished difference Result 6960 states and 9086 transitions. [2023-12-16 17:57:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:57:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 328 [2023-12-16 17:57:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:16,023 INFO L225 Difference]: With dead ends: 6960 [2023-12-16 17:57:16,024 INFO L226 Difference]: Without dead ends: 3628 [2023-12-16 17:57:16,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:57:16,030 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 10 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:16,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 671 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:57:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2023-12-16 17:57:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 3628. [2023-12-16 17:57:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2785 states have (on average 1.2757630161579891) internal successors, (3553), 2864 states have internal predecessors, (3553), 553 states have call successors, (553), 290 states have call predecessors, (553), 289 states have return successors, (552), 480 states have call predecessors, (552), 552 states have call successors, (552) [2023-12-16 17:57:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 4658 transitions. [2023-12-16 17:57:16,309 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 4658 transitions. Word has length 328 [2023-12-16 17:57:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:16,309 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 4658 transitions. [2023-12-16 17:57:16,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-16 17:57:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 4658 transitions. [2023-12-16 17:57:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 17:57:16,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:16,311 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 10, 9, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:16,315 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 (40)] Ended with exit code 0 [2023-12-16 17:57:16,515 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 [2023-12-16 17:57:16,515 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:16,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1291251721, now seen corresponding path program 1 times [2023-12-16 17:57:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730452176] [2023-12-16 17:57:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:16,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:16,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:16,517 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) [2023-12-16 17:57:16,517 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 [2023-12-16 17:57:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:16,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:57:16,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 343 proven. 4 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2023-12-16 17:57:17,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2023-12-16 17:57:17,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730452176] [2023-12-16 17:57:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730452176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:17,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-16 17:57:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047631853] [2023-12-16 17:57:17,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:17,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:57:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:57:17,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:57:17,434 INFO L87 Difference]: Start difference. First operand 3628 states and 4658 transitions. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 17 states have internal predecessors, (227), 7 states have call successors, (51), 5 states have call predecessors, (51), 7 states have return successors, (50), 9 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-16 17:57:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:18,909 INFO L93 Difference]: Finished difference Result 9285 states and 11950 transitions. [2023-12-16 17:57:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 17:57:18,909 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 17 states have internal predecessors, (227), 7 states have call successors, (51), 5 states have call predecessors, (51), 7 states have return successors, (50), 9 states have call predecessors, (50), 7 states have call successors, (50) Word has length 343 [2023-12-16 17:57:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:18,922 INFO L225 Difference]: With dead ends: 9285 [2023-12-16 17:57:18,922 INFO L226 Difference]: Without dead ends: 6059 [2023-12-16 17:57:18,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:57:18,927 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 844 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:18,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3047 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:57:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2023-12-16 17:57:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 4444. [2023-12-16 17:57:19,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4444 states, 3416 states have (on average 1.2725409836065573) internal successors, (4347), 3502 states have internal predecessors, (4347), 672 states have call successors, (672), 356 states have call predecessors, (672), 355 states have return successors, (671), 585 states have call predecessors, (671), 671 states have call successors, (671) [2023-12-16 17:57:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5690 transitions. [2023-12-16 17:57:19,286 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5690 transitions. Word has length 343 [2023-12-16 17:57:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:19,286 INFO L495 AbstractCegarLoop]: Abstraction has 4444 states and 5690 transitions. [2023-12-16 17:57:19,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 17 states have internal predecessors, (227), 7 states have call successors, (51), 5 states have call predecessors, (51), 7 states have return successors, (50), 9 states have call predecessors, (50), 7 states have call successors, (50) [2023-12-16 17:57:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5690 transitions. [2023-12-16 17:57:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-16 17:57:19,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:19,288 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:19,293 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 [2023-12-16 17:57:19,492 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 [2023-12-16 17:57:19,493 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:19,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:19,493 INFO L85 PathProgramCache]: Analyzing trace with hash -49797264, now seen corresponding path program 1 times [2023-12-16 17:57:19,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:19,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502204497] [2023-12-16 17:57:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:19,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:19,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:19,494 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) [2023-12-16 17:57:19,496 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 [2023-12-16 17:57:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:19,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:57:19,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 2 proven. 271 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2023-12-16 17:57:20,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2023-12-16 17:57:20,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502204497] [2023-12-16 17:57:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502204497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:20,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 17:57:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318373246] [2023-12-16 17:57:20,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:20,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:57:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:57:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:57:20,366 INFO L87 Difference]: Start difference. First operand 4444 states and 5690 transitions. Second operand has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) [2023-12-16 17:57:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:22,230 INFO L93 Difference]: Finished difference Result 15107 states and 19192 transitions. [2023-12-16 17:57:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:57:22,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) Word has length 356 [2023-12-16 17:57:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:22,266 INFO L225 Difference]: With dead ends: 15107 [2023-12-16 17:57:22,266 INFO L226 Difference]: Without dead ends: 11172 [2023-12-16 17:57:22,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 710 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:57:22,275 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2088 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:22,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 1270 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:57:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2023-12-16 17:57:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 4452. [2023-12-16 17:57:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3441 states have (on average 1.2647486195873292) internal successors, (4352), 3525 states have internal predecessors, (4352), 662 states have call successors, (662), 349 states have call predecessors, (662), 348 states have return successors, (661), 577 states have call predecessors, (661), 661 states have call successors, (661) [2023-12-16 17:57:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 5675 transitions. [2023-12-16 17:57:22,829 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 5675 transitions. Word has length 356 [2023-12-16 17:57:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:22,829 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 5675 transitions. [2023-12-16 17:57:22,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) [2023-12-16 17:57:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 5675 transitions. [2023-12-16 17:57:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-16 17:57:22,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:22,832 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:22,838 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 (42)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:23,036 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 [2023-12-16 17:57:23,036 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:23,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash -710908800, now seen corresponding path program 1 times [2023-12-16 17:57:23,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:23,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457773308] [2023-12-16 17:57:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:23,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:23,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:23,038 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) [2023-12-16 17:57:23,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-16 17:57:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:23,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:57:23,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 2 proven. 271 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2023-12-16 17:57:23,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2023-12-16 17:57:23,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457773308] [2023-12-16 17:57:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457773308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:23,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:23,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 17:57:23,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945002502] [2023-12-16 17:57:23,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:23,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:57:23,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:57:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:57:23,925 INFO L87 Difference]: Start difference. First operand 4452 states and 5675 transitions. Second operand has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 9 states have internal predecessors, (253), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) [2023-12-16 17:57:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:26,158 INFO L93 Difference]: Finished difference Result 16598 states and 20988 transitions. [2023-12-16 17:57:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:57:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 9 states have internal predecessors, (253), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) Word has length 357 [2023-12-16 17:57:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:26,192 INFO L225 Difference]: With dead ends: 16598 [2023-12-16 17:57:26,193 INFO L226 Difference]: Without dead ends: 12665 [2023-12-16 17:57:26,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 712 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:57:26,200 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1146 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:26,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 2030 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:57:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12665 states. [2023-12-16 17:57:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12665 to 5300. [2023-12-16 17:57:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 4083 states have (on average 1.2527553269654665) internal successors, (5115), 4179 states have internal predecessors, (5115), 798 states have call successors, (798), 419 states have call predecessors, (798), 418 states have return successors, (797), 701 states have call predecessors, (797), 797 states have call successors, (797) [2023-12-16 17:57:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 6710 transitions. [2023-12-16 17:57:27,159 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 6710 transitions. Word has length 357 [2023-12-16 17:57:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:27,159 INFO L495 AbstractCegarLoop]: Abstraction has 5300 states and 6710 transitions. [2023-12-16 17:57:27,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 9 states have internal predecessors, (253), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) [2023-12-16 17:57:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 6710 transitions. [2023-12-16 17:57:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 17:57:27,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:27,162 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:27,169 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 (43)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:27,367 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 [2023-12-16 17:57:27,367 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:27,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 359440495, now seen corresponding path program 1 times [2023-12-16 17:57:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120710209] [2023-12-16 17:57:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:27,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:27,369 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:57:27,371 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 (44)] Waiting until timeout for monitored process [2023-12-16 17:57:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:27,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:57:27,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 2 proven. 271 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2023-12-16 17:57:28,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2023-12-16 17:57:28,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120710209] [2023-12-16 17:57:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120710209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:28,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:28,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 17:57:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235198342] [2023-12-16 17:57:28,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 17:57:28,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 17:57:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:57:28,240 INFO L87 Difference]: Start difference. First operand 5300 states and 6710 transitions. Second operand has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) [2023-12-16 17:57:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:30,324 INFO L93 Difference]: Finished difference Result 13898 states and 17564 transitions. [2023-12-16 17:57:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:57:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) Word has length 358 [2023-12-16 17:57:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:30,346 INFO L225 Difference]: With dead ends: 13898 [2023-12-16 17:57:30,347 INFO L226 Difference]: Without dead ends: 9122 [2023-12-16 17:57:30,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 714 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:57:30,353 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1671 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:30,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 1653 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:57:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2023-12-16 17:57:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 6853. [2023-12-16 17:57:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 5255 states have (on average 1.2485252140818268) internal successors, (6561), 5371 states have internal predecessors, (6561), 1048 states have call successors, (1048), 550 states have call predecessors, (1048), 549 states have return successors, (1047), 931 states have call predecessors, (1047), 1047 states have call successors, (1047) [2023-12-16 17:57:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 8656 transitions. [2023-12-16 17:57:31,461 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 8656 transitions. Word has length 358 [2023-12-16 17:57:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:31,461 INFO L495 AbstractCegarLoop]: Abstraction has 6853 states and 8656 transitions. [2023-12-16 17:57:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.22222222222222) internal successors, (254), 9 states have internal predecessors, (254), 7 states have call successors, (53), 5 states have call predecessors, (53), 4 states have return successors, (52), 6 states have call predecessors, (52), 6 states have call successors, (52) [2023-12-16 17:57:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 8656 transitions. [2023-12-16 17:57:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-16 17:57:31,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:31,465 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:31,482 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 (44)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:31,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:31,669 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:31,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1810677431, now seen corresponding path program 1 times [2023-12-16 17:57:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:31,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596692721] [2023-12-16 17:57:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:31,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:31,671 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:57:31,672 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 (45)] Waiting until timeout for monitored process [2023-12-16 17:57:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:31,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:57:31,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 10 proven. 283 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-12-16 17:57:32,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-12-16 17:57:32,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596692721] [2023-12-16 17:57:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596692721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:32,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:32,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 17:57:32,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588963915] [2023-12-16 17:57:32,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:32,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:57:32,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:57:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:57:32,949 INFO L87 Difference]: Start difference. First operand 6853 states and 8656 transitions. Second operand has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 13 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 12 states have call predecessors, (54), 12 states have call successors, (54) [2023-12-16 17:57:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:38,646 INFO L93 Difference]: Finished difference Result 20548 states and 25941 transitions. [2023-12-16 17:57:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-16 17:57:38,646 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 13 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 12 states have call predecessors, (54), 12 states have call successors, (54) Word has length 363 [2023-12-16 17:57:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:38,682 INFO L225 Difference]: With dead ends: 20548 [2023-12-16 17:57:38,683 INFO L226 Difference]: Without dead ends: 14281 [2023-12-16 17:57:38,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=820, Invalid=3470, Unknown=0, NotChecked=0, Total=4290 [2023-12-16 17:57:38,694 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 2180 mSDsluCounter, 4587 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 5996 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:38,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 5996 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 17:57:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14281 states. [2023-12-16 17:57:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14281 to 9103. [2023-12-16 17:57:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9103 states, 6949 states have (on average 1.2545690027342065) internal successors, (8718), 7160 states have internal predecessors, (8718), 1417 states have call successors, (1417), 737 states have call predecessors, (1417), 736 states have return successors, (1416), 1205 states have call predecessors, (1416), 1416 states have call successors, (1416) [2023-12-16 17:57:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9103 states to 9103 states and 11551 transitions. [2023-12-16 17:57:40,239 INFO L78 Accepts]: Start accepts. Automaton has 9103 states and 11551 transitions. Word has length 363 [2023-12-16 17:57:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:40,239 INFO L495 AbstractCegarLoop]: Abstraction has 9103 states and 11551 transitions. [2023-12-16 17:57:40,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 13 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 12 states have call predecessors, (54), 12 states have call successors, (54) [2023-12-16 17:57:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9103 states and 11551 transitions. [2023-12-16 17:57:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-16 17:57:40,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:40,244 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:40,248 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 (45)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:40,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:40,448 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:40,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash 969947079, now seen corresponding path program 1 times [2023-12-16 17:57:40,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:40,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949479530] [2023-12-16 17:57:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:40,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:40,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:40,450 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:57:40,451 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 (46)] Waiting until timeout for monitored process [2023-12-16 17:57:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:40,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:57:40,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 10 proven. 288 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2023-12-16 17:57:41,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-12-16 17:57:41,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949479530] [2023-12-16 17:57:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949479530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:41,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:41,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 17:57:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456374247] [2023-12-16 17:57:41,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:57:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:57:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:57:41,656 INFO L87 Difference]: Start difference. First operand 9103 states and 11551 transitions. Second operand has 17 states, 17 states have (on average 15.411764705882353) internal successors, (262), 17 states have internal predecessors, (262), 15 states have call successors, (55), 7 states have call predecessors, (55), 6 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2023-12-16 17:57:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:47,739 INFO L93 Difference]: Finished difference Result 26256 states and 33254 transitions. [2023-12-16 17:57:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-16 17:57:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.411764705882353) internal successors, (262), 17 states have internal predecessors, (262), 15 states have call successors, (55), 7 states have call predecessors, (55), 6 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) Word has length 363 [2023-12-16 17:57:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:47,779 INFO L225 Difference]: With dead ends: 26256 [2023-12-16 17:57:47,779 INFO L226 Difference]: Without dead ends: 17873 [2023-12-16 17:57:47,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=3470, Unknown=0, NotChecked=0, Total=4290 [2023-12-16 17:57:47,790 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 2572 mSDsluCounter, 5364 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:47,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 6589 Invalid, 3927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [800 Valid, 3127 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 17:57:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17873 states. [2023-12-16 17:57:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17873 to 10776. [2023-12-16 17:57:49,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10776 states, 8216 states have (on average 1.2597370983446934) internal successors, (10350), 8490 states have internal predecessors, (10350), 1692 states have call successors, (1692), 868 states have call predecessors, (1692), 867 states have return successors, (1691), 1417 states have call predecessors, (1691), 1691 states have call successors, (1691) [2023-12-16 17:57:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10776 states to 10776 states and 13733 transitions. [2023-12-16 17:57:49,667 INFO L78 Accepts]: Start accepts. Automaton has 10776 states and 13733 transitions. Word has length 363 [2023-12-16 17:57:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:49,667 INFO L495 AbstractCegarLoop]: Abstraction has 10776 states and 13733 transitions. [2023-12-16 17:57:49,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.411764705882353) internal successors, (262), 17 states have internal predecessors, (262), 15 states have call successors, (55), 7 states have call predecessors, (55), 6 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2023-12-16 17:57:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 10776 states and 13733 transitions. [2023-12-16 17:57:49,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-16 17:57:49,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:49,671 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:49,675 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 (46)] Ended with exit code 0 [2023-12-16 17:57:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:49,876 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:49,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 591548087, now seen corresponding path program 1 times [2023-12-16 17:57:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526579200] [2023-12-16 17:57:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:49,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:49,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:49,878 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:57:49,879 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 (47)] Waiting until timeout for monitored process [2023-12-16 17:57:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:50,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:57:50,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 10 proven. 284 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2023-12-16 17:57:50,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-12-16 17:57:51,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526579200] [2023-12-16 17:57:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526579200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:51,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:51,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 17:57:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040798504] [2023-12-16 17:57:51,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:57:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:51,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:57:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:57:51,100 INFO L87 Difference]: Start difference. First operand 10776 states and 13733 transitions. Second operand has 17 states, 17 states have (on average 15.529411764705882) internal successors, (264), 17 states have internal predecessors, (264), 13 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 12 states have call predecessors, (54), 12 states have call successors, (54) Received shutdown request... [2023-12-16 17:57:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:57:52,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:57:52,012 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 854 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:52,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1982 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:57:52,013 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:57:52,020 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 (47)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:52,047 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:57:52,048 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 (47)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:57:52,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:52,215 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (10776states) and FLOYD_HOARE automaton (currently 16 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). [2023-12-16 17:57:52,219 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-16 17:57:52,221 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:57:52,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:57:52 BoogieIcfgContainer [2023-12-16 17:57:52,222 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:57:52,222 INFO L158 Benchmark]: Toolchain (without parser) took 67565.58ms. Allocated memory was 196.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 132.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 17:57:52,222 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:57:52,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.19ms. Allocated memory was 196.1MB in the beginning and 283.1MB in the end (delta: 87.0MB). Free memory was 132.6MB in the beginning and 247.5MB in the end (delta: -114.9MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. [2023-12-16 17:57:52,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.57ms. Allocated memory is still 283.1MB. Free memory was 247.5MB in the beginning and 244.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:57:52,222 INFO L158 Benchmark]: Boogie Preprocessor took 45.84ms. Allocated memory is still 283.1MB. Free memory was 244.9MB in the beginning and 241.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 17:57:52,222 INFO L158 Benchmark]: RCFGBuilder took 549.40ms. Allocated memory is still 283.1MB. Free memory was 241.2MB in the beginning and 204.5MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 17:57:52,223 INFO L158 Benchmark]: TraceAbstraction took 66622.83ms. Allocated memory was 283.1MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 204.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 17:57:52,223 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 297.19ms. Allocated memory was 196.1MB in the beginning and 283.1MB in the end (delta: 87.0MB). Free memory was 132.6MB in the beginning and 247.5MB in the end (delta: -114.9MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.57ms. Allocated memory is still 283.1MB. Free memory was 247.5MB in the beginning and 244.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.84ms. Allocated memory is still 283.1MB. Free memory was 244.9MB in the beginning and 241.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 549.40ms. Allocated memory is still 283.1MB. Free memory was 241.2MB in the beginning and 204.5MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 66622.83ms. Allocated memory was 283.1MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 204.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. 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: 537]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 537). Cancelled while NwaCegarLoop was constructing difference of abstraction (10776states) and FLOYD_HOARE automaton (currently 16 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1032 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 174 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.6s, OverallIterations: 45, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18247 SdHoareTripleChecker+Valid, 13.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18038 mSDsluCounter, 67013 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52104 mSDsCounter, 5699 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19940 IncrementalHoareTripleChecker+Invalid, 25639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5699 mSolverCounterUnsat, 14909 mSDtfsCounter, 19940 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14877 GetRequests, 14307 SyntacticMatches, 18 SemanticMatches, 552 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4365 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10776occurred in iteration=44, InterpolantAutomatonStates: 468, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.1s AutomataMinimizationTime, 44 MinimizatonAttempts, 38580 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 9971 NumberOfCodeBlocks, 9822 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 14092 ConstructedInterpolants, 0 QuantifiedInterpolants, 41538 SizeOfPredicates, 81 NumberOfNonLiveVariables, 18210 ConjunctsInSsa, 275 ConjunctsInUnsatCore, 60 InterpolantComputations, 31 PerfectInterpolantSequences, 31840/34735 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