/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 09:51:01,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 09:51:01,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 09:51:01,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 09:51:01,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 09:51:01,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 09:51:01,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 09:51:01,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 09:51:01,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 09:51:01,957 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 09:51:01,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 09:51:01,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 09:51:01,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 09:51:01,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 09:51:01,959 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 09:51:01,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 09:51:01,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 09:51:01,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 09:51:01,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 09:51:01,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 09:51:01,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 09:51:01,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 09:51:01,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 09:51:01,961 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 09:51:01,961 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 09:51:01,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 09:51:01,962 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 09:51:01,962 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 09:51:01,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 09:51:01,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 09:51:01,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 09:51:01,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 09:51:01,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:51:01,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 09:51:01,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 09:51:01,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 09:51:01,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 09:51:01,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 09:51:01,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 09:51:01,965 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 09:51:01,965 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 09:51:02,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 09:51:02,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 09:51:02,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 09:51:02,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 09:51:02,193 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 09:51:02,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-25 09:51:03,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 09:51:03,524 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 09:51:03,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-25 09:51:03,536 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8aec5e6/e03ac22e6028403eb906e285b6d9b07a/FLAGfb7a101a5 [2023-12-25 09:51:03,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8aec5e6/e03ac22e6028403eb906e285b6d9b07a [2023-12-25 09:51:03,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 09:51:03,553 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 09:51:03,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 09:51:03,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 09:51:03,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 09:51:03,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:51:03" (1/1) ... [2023-12-25 09:51:03,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701654c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:03, skipping insertion in model container [2023-12-25 09:51:03,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:51:03" (1/1) ... [2023-12-25 09:51:03,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 09:51:03,828 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2023-12-25 09:51:03,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:51:03,922 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 09:51:03,984 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2023-12-25 09:51:04,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:51:04,038 INFO L206 MainTranslator]: Completed translation [2023-12-25 09:51:04,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04 WrapperNode [2023-12-25 09:51:04,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 09:51:04,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 09:51:04,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 09:51:04,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 09:51:04,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,125 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1004 [2023-12-25 09:51:04,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 09:51:04,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 09:51:04,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 09:51:04,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 09:51:04,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,139 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,172 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 09:51:04,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 09:51:04,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 09:51:04,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 09:51:04,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 09:51:04,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (1/1) ... [2023-12-25 09:51:04,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:51:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 09:51:04,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 09:51:04,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 09:51:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 09:51:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 09:51:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 09:51:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 09:51:04,396 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 09:51:04,398 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 09:51:05,172 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 09:51:05,215 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 09:51:05,215 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 09:51:05,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:51:05 BoogieIcfgContainer [2023-12-25 09:51:05,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 09:51:05,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 09:51:05,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 09:51:05,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 09:51:05,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:51:03" (1/3) ... [2023-12-25 09:51:05,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f74764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:51:05, skipping insertion in model container [2023-12-25 09:51:05,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:51:04" (2/3) ... [2023-12-25 09:51:05,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f74764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:51:05, skipping insertion in model container [2023-12-25 09:51:05,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:51:05" (3/3) ... [2023-12-25 09:51:05,223 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-25 09:51:05,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 09:51:05,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 09:51:05,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 09:51:05,283 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;@28ffdae4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 09:51:05,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 09:51:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 254 states have (on average 1.7283464566929134) internal successors, (439), 255 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-25 09:51:05,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:05,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:05,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1844007938, now seen corresponding path program 1 times [2023-12-25 09:51:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033641700] [2023-12-25 09:51:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:05,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:05,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:05,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 09:51:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:05,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 09:51:05,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:05,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:05,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:05,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033641700] [2023-12-25 09:51:05,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033641700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:05,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686886912] [2023-12-25 09:51:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:05,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 09:51:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 09:51:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 09:51:05,904 INFO L87 Difference]: Start difference. First operand has 256 states, 254 states have (on average 1.7283464566929134) internal successors, (439), 255 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:06,332 INFO L93 Difference]: Finished difference Result 1147 states and 1900 transitions. [2023-12-25 09:51:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 09:51:06,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-25 09:51:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:06,351 INFO L225 Difference]: With dead ends: 1147 [2023-12-25 09:51:06,351 INFO L226 Difference]: Without dead ends: 975 [2023-12-25 09:51:06,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 09:51:06,360 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 1815 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:06,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 2487 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:51:06,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-25 09:51:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2023-12-25 09:51:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.5311203319502074) internal successors, (1476), 964 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1476 transitions. [2023-12-25 09:51:06,440 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1476 transitions. Word has length 95 [2023-12-25 09:51:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:06,440 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1476 transitions. [2023-12-25 09:51:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1476 transitions. [2023-12-25 09:51:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 09:51:06,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:06,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:06,467 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 [2023-12-25 09:51:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:06,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash -527213997, now seen corresponding path program 1 times [2023-12-25 09:51:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731609942] [2023-12-25 09:51:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:06,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:06,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:06,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:06,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 09:51:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:06,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:51:06,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:07,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:07,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731609942] [2023-12-25 09:51:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731609942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:07,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737811514] [2023-12-25 09:51:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:07,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:51:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:51:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:07,159 INFO L87 Difference]: Start difference. First operand 965 states and 1476 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:07,506 INFO L93 Difference]: Finished difference Result 2582 states and 4021 transitions. [2023-12-25 09:51:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:07,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-25 09:51:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:07,512 INFO L225 Difference]: With dead ends: 2582 [2023-12-25 09:51:07,513 INFO L226 Difference]: Without dead ends: 1667 [2023-12-25 09:51:07,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:51:07,516 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 898 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:07,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 353 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:51:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-12-25 09:51:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2023-12-25 09:51:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.5534855769230769) internal successors, (2585), 1664 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2585 transitions. [2023-12-25 09:51:07,549 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2585 transitions. Word has length 96 [2023-12-25 09:51:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:07,549 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2585 transitions. [2023-12-25 09:51:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2585 transitions. [2023-12-25 09:51:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 09:51:07,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:07,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:07,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:07,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:07,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:07,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1939013353, now seen corresponding path program 1 times [2023-12-25 09:51:07,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:07,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126004350] [2023-12-25 09:51:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:07,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:07,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:07,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 09:51:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:07,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:51:07,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:08,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:08,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126004350] [2023-12-25 09:51:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126004350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:08,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664262144] [2023-12-25 09:51:08,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:08,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:51:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:51:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:08,202 INFO L87 Difference]: Start difference. First operand 1665 states and 2585 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:08,603 INFO L93 Difference]: Finished difference Result 4326 states and 6798 transitions. [2023-12-25 09:51:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-25 09:51:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:08,613 INFO L225 Difference]: With dead ends: 4326 [2023-12-25 09:51:08,613 INFO L226 Difference]: Without dead ends: 2817 [2023-12-25 09:51:08,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:51:08,615 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1311 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:08,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 361 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 09:51:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2023-12-25 09:51:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2815. [2023-12-25 09:51:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2814 states have (on average 1.5621890547263682) internal successors, (4396), 2814 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4396 transitions. [2023-12-25 09:51:08,675 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4396 transitions. Word has length 96 [2023-12-25 09:51:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:08,675 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4396 transitions. [2023-12-25 09:51:08,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4396 transitions. [2023-12-25 09:51:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 09:51:08,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:08,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:08,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-25 09:51:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:08,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:08,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1325672152, now seen corresponding path program 1 times [2023-12-25 09:51:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:08,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343786028] [2023-12-25 09:51:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:08,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:08,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:08,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:08,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 09:51:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:09,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:51:09,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:09,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:09,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343786028] [2023-12-25 09:51:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343786028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531429798] [2023-12-25 09:51:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:09,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:51:09,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:51:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:09,338 INFO L87 Difference]: Start difference. First operand 2815 states and 4396 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:09,615 INFO L93 Difference]: Finished difference Result 7715 states and 12166 transitions. [2023-12-25 09:51:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:09,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-25 09:51:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:09,630 INFO L225 Difference]: With dead ends: 7715 [2023-12-25 09:51:09,630 INFO L226 Difference]: Without dead ends: 5097 [2023-12-25 09:51:09,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:51:09,634 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1297 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:09,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 370 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:51:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2023-12-25 09:51:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 5095. [2023-12-25 09:51:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 1.569297212406753) internal successors, (7994), 5094 states have internal predecessors, (7994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7994 transitions. [2023-12-25 09:51:09,742 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7994 transitions. Word has length 96 [2023-12-25 09:51:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:09,743 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 7994 transitions. [2023-12-25 09:51:09,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7994 transitions. [2023-12-25 09:51:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 09:51:09,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:09,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:09,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:09,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:09,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:09,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:09,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1348824774, now seen corresponding path program 1 times [2023-12-25 09:51:09,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:09,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767536581] [2023-12-25 09:51:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:09,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:09,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:09,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:09,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 09:51:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:10,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:51:10,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:10,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:10,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767536581] [2023-12-25 09:51:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767536581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:10,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:10,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912037670] [2023-12-25 09:51:10,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:10,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:51:10,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:10,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:51:10,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:10,296 INFO L87 Difference]: Start difference. First operand 5095 states and 7994 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:10,610 INFO L93 Difference]: Finished difference Result 14699 states and 23164 transitions. [2023-12-25 09:51:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-25 09:51:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:10,635 INFO L225 Difference]: With dead ends: 14699 [2023-12-25 09:51:10,635 INFO L226 Difference]: Without dead ends: 9723 [2023-12-25 09:51:10,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:51:10,643 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1335 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:10,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 357 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:51:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2023-12-25 09:51:10,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 9721. [2023-12-25 09:51:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9721 states, 9720 states have (on average 1.5690329218106995) internal successors, (15251), 9720 states have internal predecessors, (15251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 15251 transitions. [2023-12-25 09:51:10,822 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 15251 transitions. Word has length 96 [2023-12-25 09:51:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 9721 states and 15251 transitions. [2023-12-25 09:51:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 15251 transitions. [2023-12-25 09:51:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 09:51:10,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:10,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:10,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:11,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:11,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:11,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1067474379, now seen corresponding path program 1 times [2023-12-25 09:51:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499362004] [2023-12-25 09:51:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:11,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 09:51:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:11,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:51:11,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:11,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:11,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499362004] [2023-12-25 09:51:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499362004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074045760] [2023-12-25 09:51:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:51:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:51:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:11,349 INFO L87 Difference]: Start difference. First operand 9721 states and 15251 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:11,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:11,745 INFO L93 Difference]: Finished difference Result 28647 states and 45051 transitions. [2023-12-25 09:51:11,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:11,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-25 09:51:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:11,782 INFO L225 Difference]: With dead ends: 28647 [2023-12-25 09:51:11,782 INFO L226 Difference]: Without dead ends: 19015 [2023-12-25 09:51:11,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:51:11,795 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 850 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:11,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 355 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:51:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2023-12-25 09:51:12,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 19013. [2023-12-25 09:51:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19013 states, 19012 states have (on average 1.565274563433621) internal successors, (29759), 19012 states have internal predecessors, (29759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19013 states to 19013 states and 29759 transitions. [2023-12-25 09:51:12,066 INFO L78 Accepts]: Start accepts. Automaton has 19013 states and 29759 transitions. Word has length 96 [2023-12-25 09:51:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:12,066 INFO L495 AbstractCegarLoop]: Abstraction has 19013 states and 29759 transitions. [2023-12-25 09:51:12,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19013 states and 29759 transitions. [2023-12-25 09:51:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 09:51:12,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:12,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:12,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-25 09:51:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:12,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:12,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1709579108, now seen corresponding path program 1 times [2023-12-25 09:51:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:12,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615440292] [2023-12-25 09:51:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:12,279 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:12,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 09:51:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:12,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:51:12,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:12,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:12,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615440292] [2023-12-25 09:51:12,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615440292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:12,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:12,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260103608] [2023-12-25 09:51:12,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:12,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:51:12,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:12,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:51:12,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:12,581 INFO L87 Difference]: Start difference. First operand 19013 states and 29759 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:13,047 INFO L93 Difference]: Finished difference Result 56570 states and 88660 transitions. [2023-12-25 09:51:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:13,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-25 09:51:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:13,110 INFO L225 Difference]: With dead ends: 56570 [2023-12-25 09:51:13,110 INFO L226 Difference]: Without dead ends: 37623 [2023-12-25 09:51:13,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:51:13,139 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1383 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:13,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 355 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:51:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37623 states. [2023-12-25 09:51:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37623 to 37621. [2023-12-25 09:51:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37621 states, 37620 states have (on average 1.5590643274853802) internal successors, (58652), 37620 states have internal predecessors, (58652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37621 states to 37621 states and 58652 transitions. [2023-12-25 09:51:13,714 INFO L78 Accepts]: Start accepts. Automaton has 37621 states and 58652 transitions. Word has length 96 [2023-12-25 09:51:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:13,714 INFO L495 AbstractCegarLoop]: Abstraction has 37621 states and 58652 transitions. [2023-12-25 09:51:13,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 37621 states and 58652 transitions. [2023-12-25 09:51:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 09:51:13,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:13,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:13,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:13,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:13,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1021021110, now seen corresponding path program 1 times [2023-12-25 09:51:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129399312] [2023-12-25 09:51:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:13,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:13,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:14,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:14,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 09:51:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:14,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:14,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:14,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:14,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129399312] [2023-12-25 09:51:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129399312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:14,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591932816] [2023-12-25 09:51:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:51:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:51:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:51:14,762 INFO L87 Difference]: Start difference. First operand 37621 states and 58652 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:16,881 INFO L93 Difference]: Finished difference Result 103944 states and 162175 transitions. [2023-12-25 09:51:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:51:16,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-25 09:51:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:16,968 INFO L225 Difference]: With dead ends: 103944 [2023-12-25 09:51:16,968 INFO L226 Difference]: Without dead ends: 67022 [2023-12-25 09:51:17,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:51:17,083 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2053 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:17,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1697 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 09:51:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67022 states. [2023-12-25 09:51:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67022 to 37714. [2023-12-25 09:51:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37714 states, 37713 states have (on average 1.5579508392331556) internal successors, (58755), 37713 states have internal predecessors, (58755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37714 states to 37714 states and 58755 transitions. [2023-12-25 09:51:17,861 INFO L78 Accepts]: Start accepts. Automaton has 37714 states and 58755 transitions. Word has length 97 [2023-12-25 09:51:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:17,869 INFO L495 AbstractCegarLoop]: Abstraction has 37714 states and 58755 transitions. [2023-12-25 09:51:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 37714 states and 58755 transitions. [2023-12-25 09:51:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 09:51:17,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:17,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:17,897 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 (9)] Ended with exit code 0 [2023-12-25 09:51:18,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:18,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:18,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:18,099 INFO L85 PathProgramCache]: Analyzing trace with hash -159243062, now seen corresponding path program 1 times [2023-12-25 09:51:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626813374] [2023-12-25 09:51:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:18,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:18,101 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:18,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 09:51:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:18,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:18,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:18,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:18,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626813374] [2023-12-25 09:51:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626813374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:18,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:18,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:18,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143328127] [2023-12-25 09:51:18,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:51:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:51:18,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:51:18,815 INFO L87 Difference]: Start difference. First operand 37714 states and 58755 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:20,775 INFO L93 Difference]: Finished difference Result 64210 states and 99789 transitions. [2023-12-25 09:51:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 09:51:20,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-25 09:51:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:20,858 INFO L225 Difference]: With dead ends: 64210 [2023-12-25 09:51:20,858 INFO L226 Difference]: Without dead ends: 53840 [2023-12-25 09:51:20,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-25 09:51:20,881 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 2210 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:20,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2210 Valid, 1647 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 09:51:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53840 states. [2023-12-25 09:51:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53840 to 38182. [2023-12-25 09:51:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38182 states, 38181 states have (on average 1.556978601922422) internal successors, (59447), 38181 states have internal predecessors, (59447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38182 states to 38182 states and 59447 transitions. [2023-12-25 09:51:21,574 INFO L78 Accepts]: Start accepts. Automaton has 38182 states and 59447 transitions. Word has length 97 [2023-12-25 09:51:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:21,574 INFO L495 AbstractCegarLoop]: Abstraction has 38182 states and 59447 transitions. [2023-12-25 09:51:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 38182 states and 59447 transitions. [2023-12-25 09:51:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 09:51:21,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:21,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:21,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:21,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:21,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:21,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2065882346, now seen corresponding path program 1 times [2023-12-25 09:51:21,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:21,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417865266] [2023-12-25 09:51:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:21,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:21,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:21,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 09:51:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:21,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:21,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:22,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:22,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:22,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417865266] [2023-12-25 09:51:22,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417865266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:22,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:22,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:22,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107854858] [2023-12-25 09:51:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:22,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:51:22,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:51:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:51:22,395 INFO L87 Difference]: Start difference. First operand 38182 states and 59447 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:24,011 INFO L93 Difference]: Finished difference Result 45566 states and 70820 transitions. [2023-12-25 09:51:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 09:51:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-25 09:51:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:24,056 INFO L225 Difference]: With dead ends: 45566 [2023-12-25 09:51:24,056 INFO L226 Difference]: Without dead ends: 41778 [2023-12-25 09:51:24,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-25 09:51:24,069 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1347 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:24,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1543 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 09:51:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41778 states. [2023-12-25 09:51:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41778 to 38182. [2023-12-25 09:51:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38182 states, 38181 states have (on average 1.5568738377727143) internal successors, (59443), 38181 states have internal predecessors, (59443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38182 states to 38182 states and 59443 transitions. [2023-12-25 09:51:24,552 INFO L78 Accepts]: Start accepts. Automaton has 38182 states and 59443 transitions. Word has length 97 [2023-12-25 09:51:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:24,552 INFO L495 AbstractCegarLoop]: Abstraction has 38182 states and 59443 transitions. [2023-12-25 09:51:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 38182 states and 59443 transitions. [2023-12-25 09:51:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 09:51:24,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:24,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:24,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:24,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1754604714, now seen corresponding path program 1 times [2023-12-25 09:51:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103059502] [2023-12-25 09:51:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:24,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:24,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:24,765 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:24,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 09:51:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:24,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:24,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:25,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:25,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:25,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103059502] [2023-12-25 09:51:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103059502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:25,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:25,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544188280] [2023-12-25 09:51:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:25,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:51:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:51:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:51:25,520 INFO L87 Difference]: Start difference. First operand 38182 states and 59443 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:27,451 INFO L93 Difference]: Finished difference Result 73024 states and 113641 transitions. [2023-12-25 09:51:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:51:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-25 09:51:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:27,519 INFO L225 Difference]: With dead ends: 73024 [2023-12-25 09:51:27,519 INFO L226 Difference]: Without dead ends: 56030 [2023-12-25 09:51:27,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:51:27,542 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1814 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:27,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1661 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 09:51:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56030 states. [2023-12-25 09:51:28,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56030 to 38756. [2023-12-25 09:51:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38756 states, 38755 states have (on average 1.5540962456457232) internal successors, (60229), 38755 states have internal predecessors, (60229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38756 states to 38756 states and 60229 transitions. [2023-12-25 09:51:28,100 INFO L78 Accepts]: Start accepts. Automaton has 38756 states and 60229 transitions. Word has length 97 [2023-12-25 09:51:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:28,100 INFO L495 AbstractCegarLoop]: Abstraction has 38756 states and 60229 transitions. [2023-12-25 09:51:28,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 38756 states and 60229 transitions. [2023-12-25 09:51:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 09:51:28,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:28,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:28,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:28,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:28,311 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:28,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1663818890, now seen corresponding path program 1 times [2023-12-25 09:51:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:28,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413762171] [2023-12-25 09:51:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:28,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:28,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:28,314 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:28,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 09:51:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:28,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:28,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:29,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:29,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:29,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413762171] [2023-12-25 09:51:29,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413762171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:29,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:29,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883457788] [2023-12-25 09:51:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:51:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:51:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:51:29,066 INFO L87 Difference]: Start difference. First operand 38756 states and 60229 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:31,020 INFO L93 Difference]: Finished difference Result 86782 states and 134905 transitions. [2023-12-25 09:51:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:51:31,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-25 09:51:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:31,107 INFO L225 Difference]: With dead ends: 86782 [2023-12-25 09:51:31,107 INFO L226 Difference]: Without dead ends: 63436 [2023-12-25 09:51:31,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:51:31,146 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1875 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:31,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 1686 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 09:51:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63436 states. [2023-12-25 09:51:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63436 to 39490. [2023-12-25 09:51:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39490 states, 39489 states have (on average 1.5499252956519538) internal successors, (61205), 39489 states have internal predecessors, (61205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39490 states to 39490 states and 61205 transitions. [2023-12-25 09:51:31,791 INFO L78 Accepts]: Start accepts. Automaton has 39490 states and 61205 transitions. Word has length 97 [2023-12-25 09:51:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:31,791 INFO L495 AbstractCegarLoop]: Abstraction has 39490 states and 61205 transitions. [2023-12-25 09:51:31,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 39490 states and 61205 transitions. [2023-12-25 09:51:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 09:51:31,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:31,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:31,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:32,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:32,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:32,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash -99201942, now seen corresponding path program 1 times [2023-12-25 09:51:32,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:32,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019207077] [2023-12-25 09:51:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:32,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:32,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:32,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 09:51:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:32,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:51:32,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:32,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:32,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019207077] [2023-12-25 09:51:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019207077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:32,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:32,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:32,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226830646] [2023-12-25 09:51:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:32,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:51:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:51:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:51:32,783 INFO L87 Difference]: Start difference. First operand 39490 states and 61205 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:35,124 INFO L93 Difference]: Finished difference Result 100137 states and 155382 transitions. [2023-12-25 09:51:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:51:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-25 09:51:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:35,222 INFO L225 Difference]: With dead ends: 100137 [2023-12-25 09:51:35,222 INFO L226 Difference]: Without dead ends: 70773 [2023-12-25 09:51:35,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:51:35,242 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1782 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:35,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 2132 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 09:51:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70773 states. [2023-12-25 09:51:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70773 to 40501. [2023-12-25 09:51:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40501 states, 40500 states have (on average 1.5429135802469136) internal successors, (62488), 40500 states have internal predecessors, (62488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40501 states to 40501 states and 62488 transitions. [2023-12-25 09:51:35,855 INFO L78 Accepts]: Start accepts. Automaton has 40501 states and 62488 transitions. Word has length 97 [2023-12-25 09:51:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:35,856 INFO L495 AbstractCegarLoop]: Abstraction has 40501 states and 62488 transitions. [2023-12-25 09:51:35,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:35,856 INFO L276 IsEmpty]: Start isEmpty. Operand 40501 states and 62488 transitions. [2023-12-25 09:51:35,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-25 09:51:35,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:35,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:35,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:36,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:36,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:36,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1574343272, now seen corresponding path program 1 times [2023-12-25 09:51:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:36,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621388165] [2023-12-25 09:51:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:36,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:36,071 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:36,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 09:51:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:36,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 09:51:36,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:37,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:37,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:37,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621388165] [2023-12-25 09:51:37,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621388165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:37,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:37,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:51:37,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347486837] [2023-12-25 09:51:37,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:37,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 09:51:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 09:51:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 09:51:37,463 INFO L87 Difference]: Start difference. First operand 40501 states and 62488 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:38,086 INFO L93 Difference]: Finished difference Result 215144 states and 334505 transitions. [2023-12-25 09:51:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 09:51:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-25 09:51:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:38,537 INFO L225 Difference]: With dead ends: 215144 [2023-12-25 09:51:38,537 INFO L226 Difference]: Without dead ends: 178662 [2023-12-25 09:51:38,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 09:51:38,596 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 2478 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:38,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 1765 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:51:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178662 states. [2023-12-25 09:51:39,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178662 to 79120. [2023-12-25 09:51:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79120 states, 79119 states have (on average 1.5385432070678344) internal successors, (121728), 79119 states have internal predecessors, (121728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79120 states to 79120 states and 121728 transitions. [2023-12-25 09:51:40,216 INFO L78 Accepts]: Start accepts. Automaton has 79120 states and 121728 transitions. Word has length 98 [2023-12-25 09:51:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:40,216 INFO L495 AbstractCegarLoop]: Abstraction has 79120 states and 121728 transitions. [2023-12-25 09:51:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 79120 states and 121728 transitions. [2023-12-25 09:51:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 09:51:40,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:40,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:40,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:40,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:40,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1903613132, now seen corresponding path program 1 times [2023-12-25 09:51:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794304249] [2023-12-25 09:51:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:40,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:40,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:40,471 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:40,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 09:51:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:40,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 09:51:40,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:40,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:40,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794304249] [2023-12-25 09:51:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794304249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:40,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:40,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:40,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677144278] [2023-12-25 09:51:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:51:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:51:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:51:40,607 INFO L87 Difference]: Start difference. First operand 79120 states and 121728 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:41,289 INFO L93 Difference]: Finished difference Result 153618 states and 236481 transitions. [2023-12-25 09:51:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:51:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-25 09:51:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:41,540 INFO L225 Difference]: With dead ends: 153618 [2023-12-25 09:51:41,540 INFO L226 Difference]: Without dead ends: 153616 [2023-12-25 09:51:41,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:51:41,602 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 362 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:41,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1090 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:51:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153616 states. [2023-12-25 09:51:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153616 to 80656. [2023-12-25 09:51:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 80655 states have (on average 1.528287148967826) internal successors, (123264), 80655 states have internal predecessors, (123264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 123264 transitions. [2023-12-25 09:51:43,509 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 123264 transitions. Word has length 99 [2023-12-25 09:51:43,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:43,510 INFO L495 AbstractCegarLoop]: Abstraction has 80656 states and 123264 transitions. [2023-12-25 09:51:43,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 123264 transitions. [2023-12-25 09:51:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:51:43,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:43,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:43,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:43,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:43,729 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:43,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1462720807, now seen corresponding path program 1 times [2023-12-25 09:51:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612862521] [2023-12-25 09:51:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:43,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:43,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:43,731 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:43,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 09:51:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:43,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:51:43,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:43,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:43,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:43,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612862521] [2023-12-25 09:51:43,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612862521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:43,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:43,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:51:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844003937] [2023-12-25 09:51:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:43,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:51:43,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:51:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:51:43,960 INFO L87 Difference]: Start difference. First operand 80656 states and 123264 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:44,804 INFO L93 Difference]: Finished difference Result 221844 states and 339826 transitions. [2023-12-25 09:51:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:51:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:51:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:45,081 INFO L225 Difference]: With dead ends: 221844 [2023-12-25 09:51:45,081 INFO L226 Difference]: Without dead ends: 147346 [2023-12-25 09:51:45,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:51:45,129 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 247 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:45,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 879 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:51:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147346 states. [2023-12-25 09:51:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147346 to 146608. [2023-12-25 09:51:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146608 states, 146607 states have (on average 1.52014569563527) internal successors, (222864), 146607 states have internal predecessors, (222864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146608 states to 146608 states and 222864 transitions. [2023-12-25 09:51:47,389 INFO L78 Accepts]: Start accepts. Automaton has 146608 states and 222864 transitions. Word has length 100 [2023-12-25 09:51:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:47,389 INFO L495 AbstractCegarLoop]: Abstraction has 146608 states and 222864 transitions. [2023-12-25 09:51:47,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 146608 states and 222864 transitions. [2023-12-25 09:51:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:51:47,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:47,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:47,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:47,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:47,604 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:47,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1569828370, now seen corresponding path program 1 times [2023-12-25 09:51:47,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:47,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001478023] [2023-12-25 09:51:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:47,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:47,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:47,606 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:47,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 09:51:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:47,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:51:47,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:47,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:47,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:47,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001478023] [2023-12-25 09:51:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001478023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:47,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:47,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:51:47,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207508063] [2023-12-25 09:51:47,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:51:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:51:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:51:47,729 INFO L87 Difference]: Start difference. First operand 146608 states and 222864 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:48,836 INFO L93 Difference]: Finished difference Result 321312 states and 488862 transitions. [2023-12-25 09:51:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:51:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:51:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:49,210 INFO L225 Difference]: With dead ends: 321312 [2023-12-25 09:51:49,210 INFO L226 Difference]: Without dead ends: 196390 [2023-12-25 09:51:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:51:49,571 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 251 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:49,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 686 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:51:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196390 states. [2023-12-25 09:51:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196390 to 195316. [2023-12-25 09:51:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195316 states, 195315 states have (on average 1.5059724035532345) internal successors, (294139), 195315 states have internal predecessors, (294139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195316 states to 195316 states and 294139 transitions. [2023-12-25 09:51:52,568 INFO L78 Accepts]: Start accepts. Automaton has 195316 states and 294139 transitions. Word has length 100 [2023-12-25 09:51:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:52,569 INFO L495 AbstractCegarLoop]: Abstraction has 195316 states and 294139 transitions. [2023-12-25 09:51:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 195316 states and 294139 transitions. [2023-12-25 09:51:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:51:52,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:52,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:52,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:52,789 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:52,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1642130214, now seen corresponding path program 1 times [2023-12-25 09:51:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:52,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982732561] [2023-12-25 09:51:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:52,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:52,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:52,793 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:52,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 09:51:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:52,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:51:52,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:52,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:52,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:52,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982732561] [2023-12-25 09:51:52,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982732561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:52,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:52,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:51:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242444782] [2023-12-25 09:51:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:51:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:51:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:51:52,917 INFO L87 Difference]: Start difference. First operand 195316 states and 294139 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:53,957 INFO L93 Difference]: Finished difference Result 251590 states and 378585 transitions. [2023-12-25 09:51:53,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:51:53,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:51:53,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:51:54,377 INFO L225 Difference]: With dead ends: 251590 [2023-12-25 09:51:54,377 INFO L226 Difference]: Without dead ends: 211468 [2023-12-25 09:51:54,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:51:54,458 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 210 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:51:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 691 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:51:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211468 states. [2023-12-25 09:51:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211468 to 192746. [2023-12-25 09:51:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192746 states, 192745 states have (on average 1.488572985032037) internal successors, (286915), 192745 states have internal predecessors, (286915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192746 states to 192746 states and 286915 transitions. [2023-12-25 09:51:57,560 INFO L78 Accepts]: Start accepts. Automaton has 192746 states and 286915 transitions. Word has length 100 [2023-12-25 09:51:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:51:57,560 INFO L495 AbstractCegarLoop]: Abstraction has 192746 states and 286915 transitions. [2023-12-25 09:51:57,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 192746 states and 286915 transitions. [2023-12-25 09:51:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:51:57,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:51:57,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:51:57,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 09:51:57,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:57,779 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:51:57,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:51:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash -118113359, now seen corresponding path program 1 times [2023-12-25 09:51:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:51:57,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667863999] [2023-12-25 09:51:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:51:57,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:51:57,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:51:57,781 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:51:57,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 09:51:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:51:57,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:51:57,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:51:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:51:57,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:51:57,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:51:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667863999] [2023-12-25 09:51:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667863999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:51:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:51:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:51:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109830762] [2023-12-25 09:51:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:51:57,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:51:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:51:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:51:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:51:57,906 INFO L87 Difference]: Start difference. First operand 192746 states and 286915 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:51:59,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:51:59,859 INFO L93 Difference]: Finished difference Result 501923 states and 748459 transitions. [2023-12-25 09:51:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:51:59,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:51:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:52:00,775 INFO L225 Difference]: With dead ends: 501923 [2023-12-25 09:52:00,775 INFO L226 Difference]: Without dead ends: 328163 [2023-12-25 09:52:00,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:00,842 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 255 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:52:00,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 718 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:52:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328163 states. [2023-12-25 09:52:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328163 to 327681. [2023-12-25 09:52:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327681 states, 327680 states have (on average 1.4823455810546875) internal successors, (485735), 327680 states have internal predecessors, (485735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327681 states to 327681 states and 485735 transitions. [2023-12-25 09:52:05,326 INFO L78 Accepts]: Start accepts. Automaton has 327681 states and 485735 transitions. Word has length 100 [2023-12-25 09:52:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:52:05,326 INFO L495 AbstractCegarLoop]: Abstraction has 327681 states and 485735 transitions. [2023-12-25 09:52:05,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 327681 states and 485735 transitions. [2023-12-25 09:52:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:52:05,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:52:05,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:52:05,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 09:52:05,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:05,558 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:52:05,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:52:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1807200719, now seen corresponding path program 1 times [2023-12-25 09:52:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:52:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147379581] [2023-12-25 09:52:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:52:05,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:52:05,561 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:52:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 09:52:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:52:05,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:52:05,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:52:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:52:05,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:52:05,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:52:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147379581] [2023-12-25 09:52:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147379581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:52:05,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:52:05,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:52:05,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168481418] [2023-12-25 09:52:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:52:05,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:52:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:52:05,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:52:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:05,718 INFO L87 Difference]: Start difference. First operand 327681 states and 485735 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:52:07,905 INFO L93 Difference]: Finished difference Result 510465 states and 757493 transitions. [2023-12-25 09:52:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:52:07,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:52:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:52:08,965 INFO L225 Difference]: With dead ends: 510465 [2023-12-25 09:52:08,965 INFO L226 Difference]: Without dead ends: 369719 [2023-12-25 09:52:09,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:09,055 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 216 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:52:09,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 720 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:52:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369719 states. [2023-12-25 09:52:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369719 to 366677. [2023-12-25 09:52:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366677 states, 366676 states have (on average 1.4640800052362304) internal successors, (536843), 366676 states have internal predecessors, (536843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366677 states to 366677 states and 536843 transitions. [2023-12-25 09:52:14,137 INFO L78 Accepts]: Start accepts. Automaton has 366677 states and 536843 transitions. Word has length 100 [2023-12-25 09:52:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:52:14,137 INFO L495 AbstractCegarLoop]: Abstraction has 366677 states and 536843 transitions. [2023-12-25 09:52:14,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 366677 states and 536843 transitions. [2023-12-25 09:52:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:52:14,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:52:14,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:52:14,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-25 09:52:14,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:14,361 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:52:14,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:52:14,361 INFO L85 PathProgramCache]: Analyzing trace with hash -605215566, now seen corresponding path program 1 times [2023-12-25 09:52:14,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:52:14,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99153714] [2023-12-25 09:52:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:52:14,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:52:14,363 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:52:14,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 09:52:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:52:14,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:52:14,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:52:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:52:14,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:52:14,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:52:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99153714] [2023-12-25 09:52:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99153714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:52:14,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:52:14,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:52:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435686642] [2023-12-25 09:52:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:52:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:52:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:52:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:52:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:14,522 INFO L87 Difference]: Start difference. First operand 366677 states and 536843 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:52:17,213 INFO L93 Difference]: Finished difference Result 683473 states and 1000809 transitions. [2023-12-25 09:52:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:52:17,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:52:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:52:18,222 INFO L225 Difference]: With dead ends: 683473 [2023-12-25 09:52:18,222 INFO L226 Difference]: Without dead ends: 436823 [2023-12-25 09:52:18,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:18,428 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 226 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:52:18,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:52:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436823 states. [2023-12-25 09:52:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436823 to 433493. [2023-12-25 09:52:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433493 states, 433492 states have (on average 1.4427878715178135) internal successors, (625437), 433492 states have internal predecessors, (625437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433493 states to 433493 states and 625437 transitions. [2023-12-25 09:52:25,386 INFO L78 Accepts]: Start accepts. Automaton has 433493 states and 625437 transitions. Word has length 100 [2023-12-25 09:52:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:52:25,387 INFO L495 AbstractCegarLoop]: Abstraction has 433493 states and 625437 transitions. [2023-12-25 09:52:25,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 433493 states and 625437 transitions. [2023-12-25 09:52:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 09:52:25,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:52:25,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:52:25,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-25 09:52:25,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:25,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:52:25,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:52:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1540466351, now seen corresponding path program 1 times [2023-12-25 09:52:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:52:25,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857259721] [2023-12-25 09:52:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:52:25,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:52:25,638 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:52:25,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-25 09:52:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:52:25,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:52:25,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:52:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:52:25,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:52:25,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:52:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857259721] [2023-12-25 09:52:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857259721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:52:25,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:52:25,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:52:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330731424] [2023-12-25 09:52:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:52:25,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:52:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:52:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:52:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:25,814 INFO L87 Difference]: Start difference. First operand 433493 states and 625437 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:52:29,740 INFO L93 Difference]: Finished difference Result 910247 states and 1310543 transitions. [2023-12-25 09:52:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:52:29,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-25 09:52:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:52:31,514 INFO L225 Difference]: With dead ends: 910247 [2023-12-25 09:52:31,514 INFO L226 Difference]: Without dead ends: 535427 [2023-12-25 09:52:31,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:52:31,675 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 236 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:52:31,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 676 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:52:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535427 states. [2023-12-25 09:52:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535427 to 532081. [2023-12-25 09:52:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532081 states, 532080 states have (on average 1.417636445647271) internal successors, (754296), 532080 states have internal predecessors, (754296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532081 states to 532081 states and 754296 transitions. [2023-12-25 09:52:40,179 INFO L78 Accepts]: Start accepts. Automaton has 532081 states and 754296 transitions. Word has length 100 [2023-12-25 09:52:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:52:40,179 INFO L495 AbstractCegarLoop]: Abstraction has 532081 states and 754296 transitions. [2023-12-25 09:52:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 532081 states and 754296 transitions. [2023-12-25 09:52:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 09:52:40,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:52:40,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:52:40,202 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 (23)] Ended with exit code 0 [2023-12-25 09:52:40,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:40,403 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:52:40,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:52:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash -618136975, now seen corresponding path program 1 times [2023-12-25 09:52:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:52:40,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823806050] [2023-12-25 09:52:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:52:40,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:52:40,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:52:40,410 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:52:40,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-25 09:52:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:52:40,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:52:40,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:52:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:52:41,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:52:41,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:52:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823806050] [2023-12-25 09:52:41,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823806050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:52:41,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:52:41,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:52:41,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431869735] [2023-12-25 09:52:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:52:41,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:52:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:52:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:52:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:52:41,048 INFO L87 Difference]: Start difference. First operand 532081 states and 754296 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:52:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:52:49,759 INFO L93 Difference]: Finished difference Result 2129093 states and 3008444 transitions. [2023-12-25 09:52:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:52:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-25 09:52:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:52:53,795 INFO L225 Difference]: With dead ends: 2129093 [2023-12-25 09:52:53,795 INFO L226 Difference]: Without dead ends: 1602815 [2023-12-25 09:52:54,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:52:54,164 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 2015 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:52:54,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 650 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:52:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602815 states. [2023-12-25 09:53:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602815 to 528522. [2023-12-25 09:53:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528522 states, 528521 states have (on average 1.4086119567623614) internal successors, (744481), 528521 states have internal predecessors, (744481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:53:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528522 states to 528522 states and 744481 transitions. [2023-12-25 09:53:10,172 INFO L78 Accepts]: Start accepts. Automaton has 528522 states and 744481 transitions. Word has length 101 [2023-12-25 09:53:10,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:53:10,172 INFO L495 AbstractCegarLoop]: Abstraction has 528522 states and 744481 transitions. [2023-12-25 09:53:10,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:53:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 528522 states and 744481 transitions. [2023-12-25 09:53:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 09:53:10,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:53:10,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:53:10,203 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 (24)] Ended with exit code 0 [2023-12-25 09:53:10,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:53:10,406 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:53:10,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:53:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1050803689, now seen corresponding path program 1 times [2023-12-25 09:53:10,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:53:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747083122] [2023-12-25 09:53:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:53:10,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:53:10,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:53:10,409 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:53:10,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-25 09:53:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:53:10,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:53:10,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:53:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:53:10,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:53:10,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:53:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747083122] [2023-12-25 09:53:10,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747083122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:53:10,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:53:10,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:53:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262735643] [2023-12-25 09:53:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:53:10,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:53:10,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:53:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:53:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:53:10,721 INFO L87 Difference]: Start difference. First operand 528522 states and 744481 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:53:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:53:21,945 INFO L93 Difference]: Finished difference Result 2612350 states and 3648289 transitions. [2023-12-25 09:53:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:53:21,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-25 09:53:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:53:26,846 INFO L225 Difference]: With dead ends: 2612350 [2023-12-25 09:53:26,847 INFO L226 Difference]: Without dead ends: 2091836 [2023-12-25 09:53:27,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:53:27,309 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 2513 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 09:53:27,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 793 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 09:53:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091836 states. [2023-12-25 09:53:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091836 to 527608. [2023-12-25 09:53:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527608 states, 527607 states have (on average 1.398254761593383) internal successors, (737729), 527607 states have internal predecessors, (737729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:53:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527608 states to 527608 states and 737729 transitions. [2023-12-25 09:53:46,680 INFO L78 Accepts]: Start accepts. Automaton has 527608 states and 737729 transitions. Word has length 101 [2023-12-25 09:53:46,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:53:46,681 INFO L495 AbstractCegarLoop]: Abstraction has 527608 states and 737729 transitions. [2023-12-25 09:53:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:53:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 527608 states and 737729 transitions. [2023-12-25 09:53:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 09:53:46,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:53:46,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:53:46,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-25 09:53:46,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:53:46,901 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:53:46,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:53:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1138128382, now seen corresponding path program 1 times [2023-12-25 09:53:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:53:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521138618] [2023-12-25 09:53:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:53:46,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:53:46,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:53:46,929 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:53:46,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-25 09:53:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:53:47,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:53:47,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:53:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:53:47,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:53:47,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:53:47,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521138618] [2023-12-25 09:53:47,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521138618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:53:47,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:53:47,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:53:47,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730933953] [2023-12-25 09:53:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:53:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:53:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:53:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:53:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:53:47,279 INFO L87 Difference]: Start difference. First operand 527608 states and 737729 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:53:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:53:57,337 INFO L93 Difference]: Finished difference Result 2091932 states and 2914795 transitions. [2023-12-25 09:53:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:53:57,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-25 09:53:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:54:01,911 INFO L225 Difference]: With dead ends: 2091932 [2023-12-25 09:54:01,911 INFO L226 Difference]: Without dead ends: 1576700 [2023-12-25 09:54:02,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:54:02,578 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1741 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 09:54:02,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 703 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 09:54:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576700 states. [2023-12-25 09:54:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576700 to 952974. [2023-12-25 09:54:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952974 states, 952973 states have (on average 1.3862690758290108) internal successors, (1321077), 952973 states have internal predecessors, (1321077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:54:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952974 states to 952974 states and 1321077 transitions. [2023-12-25 09:54:25,722 INFO L78 Accepts]: Start accepts. Automaton has 952974 states and 1321077 transitions. Word has length 101 [2023-12-25 09:54:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:54:25,722 INFO L495 AbstractCegarLoop]: Abstraction has 952974 states and 1321077 transitions. [2023-12-25 09:54:25,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:54:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 952974 states and 1321077 transitions. [2023-12-25 09:54:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 09:54:25,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:54:25,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:54:25,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-25 09:54:25,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:54:25,951 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:54:25,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:54:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -201238574, now seen corresponding path program 1 times [2023-12-25 09:54:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:54:25,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902512953] [2023-12-25 09:54:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:54:25,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:54:25,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:54:25,957 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:54:25,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-25 09:54:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:54:26,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:54:26,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:54:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:54:26,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:54:26,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:54:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902512953] [2023-12-25 09:54:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902512953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:54:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:54:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:54:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298577275] [2023-12-25 09:54:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:54:26,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:54:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:54:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:54:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:54:26,388 INFO L87 Difference]: Start difference. First operand 952974 states and 1321077 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)