/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 08:01:36,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 08:01:36,362 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 08:01:36,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 08:01:36,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 08:01:36,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 08:01:36,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 08:01:36,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 08:01:36,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 08:01:36,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 08:01:36,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 08:01:36,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 08:01:36,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 08:01:36,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 08:01:36,397 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 08:01:36,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 08:01:36,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 08:01:36,398 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 08:01:36,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 08:01:36,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 08:01:36,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 08:01:36,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 08:01:36,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 08:01:36,400 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 08:01:36,400 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 08:01:36,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 08:01:36,401 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 08:01:36,401 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 08:01:36,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 08:01:36,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 08:01:36,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 08:01:36,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 08:01:36,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 08:01:36,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 08:01:36,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 08:01:36,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 08:01:36,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 08:01:36,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 08:01:36,403 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 08:01:36,404 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 08:01:36,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 08:01:36,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 08:01:36,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 08:01:36,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 08:01:36,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 08:01:36,405 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 08:01:36,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 08:01:36,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 08:01:36,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 08:01:36,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 08:01:36,611 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 08:01:36,611 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 08:01:36,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2023-12-25 08:01:37,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 08:01:38,278 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 08:01:38,279 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2023-12-25 08:01:38,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dcabf1f/85a4048e93b44339af9abdb574874425/FLAGf34bb20e2 [2023-12-25 08:01:38,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dcabf1f/85a4048e93b44339af9abdb574874425 [2023-12-25 08:01:38,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 08:01:38,332 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 08:01:38,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 08:01:38,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 08:01:38,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 08:01:38,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:38,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c12ee97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38, skipping insertion in model container [2023-12-25 08:01:38,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:38,407 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 08:01:38,744 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c[30998,31011] [2023-12-25 08:01:38,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 08:01:38,769 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 08:01:38,875 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c[30998,31011] [2023-12-25 08:01:38,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 08:01:38,904 INFO L206 MainTranslator]: Completed translation [2023-12-25 08:01:38,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38 WrapperNode [2023-12-25 08:01:38,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 08:01:38,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 08:01:38,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 08:01:38,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 08:01:38,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:38,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:38,973 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 976 [2023-12-25 08:01:38,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 08:01:38,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 08:01:38,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 08:01:38,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 08:01:38,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:38,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:38,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,031 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 08:01:39,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 08:01:39,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 08:01:39,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 08:01:39,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 08:01:39,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (1/1) ... [2023-12-25 08:01:39,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 08:01:39,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 08:01:39,170 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 08:01:39,180 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 08:01:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 08:01:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 08:01:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 08:01:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 08:01:39,327 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 08:01:39,329 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 08:01:40,080 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 08:01:40,120 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 08:01:40,120 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 08:01:40,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:01:40 BoogieIcfgContainer [2023-12-25 08:01:40,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 08:01:40,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 08:01:40,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 08:01:40,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 08:01:40,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:01:38" (1/3) ... [2023-12-25 08:01:40,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade2585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:01:40, skipping insertion in model container [2023-12-25 08:01:40,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:01:38" (2/3) ... [2023-12-25 08:01:40,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade2585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:01:40, skipping insertion in model container [2023-12-25 08:01:40,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:01:40" (3/3) ... [2023-12-25 08:01:40,127 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2023-12-25 08:01:40,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 08:01:40,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 08:01:40,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 08:01:40,187 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;@5c37fe16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 08:01:40,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 08:01:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 293 states have (on average 1.8464163822525597) internal successors, (541), 294 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:40,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 08:01:40,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:40,211 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] [2023-12-25 08:01:40,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:40,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 161010011, now seen corresponding path program 1 times [2023-12-25 08:01:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:40,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535121946] [2023-12-25 08:01:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:40,226 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 08:01:40,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:40,228 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 08:01:40,234 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 08:01:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:40,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 08:01:40,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:40,446 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 08:01:40,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:40,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:40,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535121946] [2023-12-25 08:01:40,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535121946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:40,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:40,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 08:01:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425529039] [2023-12-25 08:01:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 08:01:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 08:01:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 08:01:40,486 INFO L87 Difference]: Start difference. First operand has 295 states, 293 states have (on average 1.8464163822525597) internal successors, (541), 294 states have internal predecessors, (541), 0 states have call successors, (0), 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 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:40,538 INFO L93 Difference]: Finished difference Result 397 states and 722 transitions. [2023-12-25 08:01:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 08:01:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-25 08:01:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:40,550 INFO L225 Difference]: With dead ends: 397 [2023-12-25 08:01:40,551 INFO L226 Difference]: Without dead ends: 293 [2023-12-25 08:01:40,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 08:01:40,555 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:40,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 534 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-25 08:01:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-25 08:01:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.8356164383561644) internal successors, (536), 292 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 536 transitions. [2023-12-25 08:01:40,602 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 536 transitions. Word has length 74 [2023-12-25 08:01:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:40,603 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 536 transitions. [2023-12-25 08:01:40,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:40,604 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 536 transitions. [2023-12-25 08:01:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 08:01:40,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:40,607 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] [2023-12-25 08:01:40,616 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 08:01:40,811 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 08:01:40,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1644428323, now seen corresponding path program 1 times [2023-12-25 08:01:40,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:40,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384403481] [2023-12-25 08:01:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:40,814 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 08:01:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:40,815 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 08:01:40,820 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 08:01:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:40,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 08:01:40,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:40,990 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 08:01:40,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:40,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384403481] [2023-12-25 08:01:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384403481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:40,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 08:01:40,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031428382] [2023-12-25 08:01:40,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:40,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:40,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:40,993 INFO L87 Difference]: Start difference. First operand 293 states and 536 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:41,050 INFO L93 Difference]: Finished difference Result 395 states and 715 transitions. [2023-12-25 08:01:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 08:01:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-25 08:01:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:41,053 INFO L225 Difference]: With dead ends: 395 [2023-12-25 08:01:41,053 INFO L226 Difference]: Without dead ends: 293 [2023-12-25 08:01:41,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 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 08:01:41,054 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:41,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1550 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-25 08:01:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-25 08:01:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.678082191780822) internal successors, (490), 292 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 490 transitions. [2023-12-25 08:01:41,064 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 490 transitions. Word has length 74 [2023-12-25 08:01:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:41,065 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 490 transitions. [2023-12-25 08:01:41,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 490 transitions. [2023-12-25 08:01:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-25 08:01:41,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:41,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:01:41,079 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 08:01:41,270 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 08:01:41,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:41,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash 427323051, now seen corresponding path program 1 times [2023-12-25 08:01:41,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:41,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494891520] [2023-12-25 08:01:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:41,272 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 08:01:41,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:41,273 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 08:01:41,275 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 08:01:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:41,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:01:41,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:41,435 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 08:01:41,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:41,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494891520] [2023-12-25 08:01:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494891520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095802257] [2023-12-25 08:01:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:41,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:01:41,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:01:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:01:41,438 INFO L87 Difference]: Start difference. First operand 293 states and 490 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:41,468 INFO L93 Difference]: Finished difference Result 479 states and 820 transitions. [2023-12-25 08:01:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:01:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-25 08:01:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:41,470 INFO L225 Difference]: With dead ends: 479 [2023-12-25 08:01:41,470 INFO L226 Difference]: Without dead ends: 380 [2023-12-25 08:01:41,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 08:01:41,471 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 146 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:41,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 918 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-25 08:01:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 378. [2023-12-25 08:01:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.6923076923076923) internal successors, (638), 377 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 638 transitions. [2023-12-25 08:01:41,482 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 638 transitions. Word has length 119 [2023-12-25 08:01:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:41,482 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 638 transitions. [2023-12-25 08:01:41,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 638 transitions. [2023-12-25 08:01:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-25 08:01:41,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:41,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:01:41,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 08:01:41,687 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 08:01:41,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:41,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash 694490375, now seen corresponding path program 1 times [2023-12-25 08:01:41,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:41,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074914246] [2023-12-25 08:01:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:41,690 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 08:01:41,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:41,691 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 08:01:41,723 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 08:01:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:41,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:41,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:41,906 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 08:01:41,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:41,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:41,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074914246] [2023-12-25 08:01:41,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074914246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:41,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:41,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:41,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370113962] [2023-12-25 08:01:41,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:41,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:41,909 INFO L87 Difference]: Start difference. First operand 378 states and 638 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:41,962 INFO L93 Difference]: Finished difference Result 1112 states and 1873 transitions. [2023-12-25 08:01:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:41,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-12-25 08:01:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:41,965 INFO L225 Difference]: With dead ends: 1112 [2023-12-25 08:01:41,965 INFO L226 Difference]: Without dead ends: 744 [2023-12-25 08:01:41,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 08:01:41,967 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 972 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:41,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-25 08:01:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2023-12-25 08:01:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.6761133603238867) internal successors, (1242), 741 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1242 transitions. [2023-12-25 08:01:41,982 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1242 transitions. Word has length 122 [2023-12-25 08:01:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:41,983 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1242 transitions. [2023-12-25 08:01:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1242 transitions. [2023-12-25 08:01:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-25 08:01:41,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:41,985 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, 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 08:01:41,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-25 08:01:42,187 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 08:01:42,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:42,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1946935404, now seen corresponding path program 1 times [2023-12-25 08:01:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463219297] [2023-12-25 08:01:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:42,189 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 08:01:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:42,190 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 08:01:42,192 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 08:01:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:42,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:42,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:42,515 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 08:01:42,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:42,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463219297] [2023-12-25 08:01:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463219297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894099306] [2023-12-25 08:01:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:42,518 INFO L87 Difference]: Start difference. First operand 742 states and 1242 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:42,576 INFO L93 Difference]: Finished difference Result 2192 states and 3665 transitions. [2023-12-25 08:01:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-25 08:01:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:42,581 INFO L225 Difference]: With dead ends: 2192 [2023-12-25 08:01:42,582 INFO L226 Difference]: Without dead ends: 1461 [2023-12-25 08:01:42,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 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 08:01:42,583 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 959 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:42,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1110 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-12-25 08:01:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1459. [2023-12-25 08:01:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 1.6604938271604939) internal successors, (2421), 1458 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2421 transitions. [2023-12-25 08:01:42,609 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2421 transitions. Word has length 123 [2023-12-25 08:01:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:42,609 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2421 transitions. [2023-12-25 08:01:42,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2421 transitions. [2023-12-25 08:01:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-25 08:01:42,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:42,612 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, 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 08:01:42,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 08:01:42,815 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 08:01:42,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:42,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1966657039, now seen corresponding path program 1 times [2023-12-25 08:01:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20860828] [2023-12-25 08:01:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:42,817 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 08:01:42,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:42,832 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 08:01:42,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 08:01:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:42,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:01:42,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:42,977 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 08:01:42,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:42,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20860828] [2023-12-25 08:01:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20860828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:42,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552216597] [2023-12-25 08:01:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:01:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:01:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:01:42,979 INFO L87 Difference]: Start difference. First operand 1459 states and 2421 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:43,005 INFO L93 Difference]: Finished difference Result 2163 states and 3667 transitions. [2023-12-25 08:01:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:01:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-25 08:01:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:43,011 INFO L225 Difference]: With dead ends: 2163 [2023-12-25 08:01:43,011 INFO L226 Difference]: Without dead ends: 1781 [2023-12-25 08:01:43,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 08:01:43,013 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 155 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:43,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1076 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2023-12-25 08:01:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2023-12-25 08:01:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 1.6766029246344207) internal successors, (2981), 1778 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2981 transitions. [2023-12-25 08:01:43,044 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2981 transitions. Word has length 123 [2023-12-25 08:01:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:43,044 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2981 transitions. [2023-12-25 08:01:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2981 transitions. [2023-12-25 08:01:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-25 08:01:43,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:43,047 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, 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 08:01:43,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 08:01:43,249 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 08:01:43,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:43,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1700025011, now seen corresponding path program 1 times [2023-12-25 08:01:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:43,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593581479] [2023-12-25 08:01:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:43,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 08:01:43,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:43,252 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 08:01:43,254 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 08:01:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:43,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:43,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:43,514 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 08:01:43,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:43,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593581479] [2023-12-25 08:01:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593581479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:43,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:43,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18785255] [2023-12-25 08:01:43,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:43,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:43,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:43,516 INFO L87 Difference]: Start difference. First operand 1779 states and 2981 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:43,683 INFO L93 Difference]: Finished difference Result 5264 states and 8814 transitions. [2023-12-25 08:01:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-25 08:01:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:43,708 INFO L225 Difference]: With dead ends: 5264 [2023-12-25 08:01:43,708 INFO L226 Difference]: Without dead ends: 3511 [2023-12-25 08:01:43,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 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 08:01:43,712 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 944 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:43,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1113 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 08:01:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2023-12-25 08:01:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3509. [2023-12-25 08:01:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3508 states have (on average 1.6630558722919042) internal successors, (5834), 3508 states have internal predecessors, (5834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5834 transitions. [2023-12-25 08:01:43,790 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5834 transitions. Word has length 124 [2023-12-25 08:01:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:43,790 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 5834 transitions. [2023-12-25 08:01:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5834 transitions. [2023-12-25 08:01:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 08:01:43,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:43,794 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, 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 08:01:43,806 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 (8)] Ended with exit code 0 [2023-12-25 08:01:43,996 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 08:01:43,997 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:43,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash -401988786, now seen corresponding path program 1 times [2023-12-25 08:01:43,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:43,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870054445] [2023-12-25 08:01:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:43,998 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 08:01:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:43,999 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 08:01:44,037 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 08:01:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:44,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:01:44,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:44,167 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 08:01:44,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:44,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:44,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870054445] [2023-12-25 08:01:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870054445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:44,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585148673] [2023-12-25 08:01:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:44,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:01:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:01:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:01:44,169 INFO L87 Difference]: Start difference. First operand 3509 states and 5834 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:44,220 INFO L93 Difference]: Finished difference Result 7341 states and 12504 transitions. [2023-12-25 08:01:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:01:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-25 08:01:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:44,235 INFO L225 Difference]: With dead ends: 7341 [2023-12-25 08:01:44,236 INFO L226 Difference]: Without dead ends: 5311 [2023-12-25 08:01:44,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 08:01:44,240 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 144 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:44,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 939 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2023-12-25 08:01:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5309. [2023-12-25 08:01:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 1.6853805576488319) internal successors, (8946), 5308 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 8946 transitions. [2023-12-25 08:01:44,339 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 8946 transitions. Word has length 125 [2023-12-25 08:01:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:44,339 INFO L495 AbstractCegarLoop]: Abstraction has 5309 states and 8946 transitions. [2023-12-25 08:01:44,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 8946 transitions. [2023-12-25 08:01:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 08:01:44,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:44,343 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, 1, 1, 1, 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 08:01:44,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 08:01:44,545 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 08:01:44,546 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:44,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:44,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1641761841, now seen corresponding path program 1 times [2023-12-25 08:01:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:44,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635827166] [2023-12-25 08:01:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:44,547 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 08:01:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:44,548 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 08:01:44,554 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 08:01:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:44,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:44,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:44,784 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 08:01:44,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:44,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:44,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635827166] [2023-12-25 08:01:44,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635827166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:44,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:44,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:44,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723669847] [2023-12-25 08:01:44,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:44,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:44,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:44,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:44,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:44,786 INFO L87 Difference]: Start difference. First operand 5309 states and 8946 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:44,897 INFO L93 Difference]: Finished difference Result 15593 states and 26256 transitions. [2023-12-25 08:01:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-25 08:01:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:44,926 INFO L225 Difference]: With dead ends: 15593 [2023-12-25 08:01:44,926 INFO L226 Difference]: Without dead ends: 10419 [2023-12-25 08:01:44,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 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 08:01:44,934 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 888 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:44,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:44,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10419 states. [2023-12-25 08:01:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10419 to 10417. [2023-12-25 08:01:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10417 states, 10416 states have (on average 1.6726190476190477) internal successors, (17422), 10416 states have internal predecessors, (17422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10417 states to 10417 states and 17422 transitions. [2023-12-25 08:01:45,133 INFO L78 Accepts]: Start accepts. Automaton has 10417 states and 17422 transitions. Word has length 128 [2023-12-25 08:01:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:45,133 INFO L495 AbstractCegarLoop]: Abstraction has 10417 states and 17422 transitions. [2023-12-25 08:01:45,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10417 states and 17422 transitions. [2023-12-25 08:01:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-25 08:01:45,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:45,141 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, 1, 1, 1, 1, 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 08:01:45,159 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 08:01:45,344 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 08:01:45,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:45,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1876291975, now seen corresponding path program 1 times [2023-12-25 08:01:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259653693] [2023-12-25 08:01:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:45,346 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 08:01:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:45,347 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 08:01:45,384 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 08:01:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:45,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:01:45,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:45,477 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 08:01:45,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:45,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259653693] [2023-12-25 08:01:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259653693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:45,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614406727] [2023-12-25 08:01:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:45,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:01:45,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:45,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:01:45,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:01:45,479 INFO L87 Difference]: Start difference. First operand 10417 states and 17422 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:45,638 INFO L93 Difference]: Finished difference Result 21893 states and 37248 transitions. [2023-12-25 08:01:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:01:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-25 08:01:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:45,674 INFO L225 Difference]: With dead ends: 21893 [2023-12-25 08:01:45,675 INFO L226 Difference]: Without dead ends: 14299 [2023-12-25 08:01:45,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 08:01:45,687 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 153 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:45,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 969 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14299 states. [2023-12-25 08:01:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 13985. [2023-12-25 08:01:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13985 states, 13984 states have (on average 1.670337528604119) internal successors, (23358), 13984 states have internal predecessors, (23358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13985 states to 13985 states and 23358 transitions. [2023-12-25 08:01:46,042 INFO L78 Accepts]: Start accepts. Automaton has 13985 states and 23358 transitions. Word has length 129 [2023-12-25 08:01:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:46,042 INFO L495 AbstractCegarLoop]: Abstraction has 13985 states and 23358 transitions. [2023-12-25 08:01:46,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13985 states and 23358 transitions. [2023-12-25 08:01:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-25 08:01:46,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:46,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:46,071 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 (11)] Ended with exit code 0 [2023-12-25 08:01:46,252 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 08:01:46,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:46,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash -287944073, now seen corresponding path program 1 times [2023-12-25 08:01:46,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:46,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860357843] [2023-12-25 08:01:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:46,304 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 08:01:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:46,305 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 08:01:46,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 08:01:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:46,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:46,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:46,533 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 08:01:46,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:46,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860357843] [2023-12-25 08:01:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860357843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:46,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:46,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576357812] [2023-12-25 08:01:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:46,536 INFO L87 Difference]: Start difference. First operand 13985 states and 23358 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:46,752 INFO L93 Difference]: Finished difference Result 41399 states and 69152 transitions. [2023-12-25 08:01:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:46,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-25 08:01:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:46,806 INFO L225 Difference]: With dead ends: 41399 [2023-12-25 08:01:46,806 INFO L226 Difference]: Without dead ends: 27542 [2023-12-25 08:01:46,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 08:01:46,824 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 899 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:46,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1122 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27542 states. [2023-12-25 08:01:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27542 to 27540. [2023-12-25 08:01:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27540 states, 27539 states have (on average 1.6571407821634772) internal successors, (45636), 27539 states have internal predecessors, (45636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27540 states to 27540 states and 45636 transitions. [2023-12-25 08:01:47,326 INFO L78 Accepts]: Start accepts. Automaton has 27540 states and 45636 transitions. Word has length 129 [2023-12-25 08:01:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:47,326 INFO L495 AbstractCegarLoop]: Abstraction has 27540 states and 45636 transitions. [2023-12-25 08:01:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 27540 states and 45636 transitions. [2023-12-25 08:01:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 08:01:47,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:47,341 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, 1, 1, 1, 1, 1, 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 08:01:47,344 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 (12)] Ended with exit code 0 [2023-12-25 08:01:47,544 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 08:01:47,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:47,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash -771924947, now seen corresponding path program 1 times [2023-12-25 08:01:47,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:47,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582833858] [2023-12-25 08:01:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:47,546 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 08:01:47,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:47,547 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 08:01:47,549 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 08:01:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:47,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:01:47,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:47,778 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 08:01:47,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:47,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:47,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582833858] [2023-12-25 08:01:47,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582833858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:47,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:47,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:47,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015682679] [2023-12-25 08:01:47,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:47,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:01:47,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:01:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:01:47,780 INFO L87 Difference]: Start difference. First operand 27540 states and 45636 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:48,045 INFO L93 Difference]: Finished difference Result 49176 states and 82470 transitions. [2023-12-25 08:01:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:01:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-25 08:01:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:48,114 INFO L225 Difference]: With dead ends: 49176 [2023-12-25 08:01:48,114 INFO L226 Difference]: Without dead ends: 34182 [2023-12-25 08:01:48,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 08:01:48,134 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 145 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:48,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1069 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34182 states. [2023-12-25 08:01:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34182 to 34180. [2023-12-25 08:01:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34180 states, 34179 states have (on average 1.6624242956201176) internal successors, (56820), 34179 states have internal predecessors, (56820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34180 states to 34180 states and 56820 transitions. [2023-12-25 08:01:48,827 INFO L78 Accepts]: Start accepts. Automaton has 34180 states and 56820 transitions. Word has length 130 [2023-12-25 08:01:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:48,827 INFO L495 AbstractCegarLoop]: Abstraction has 34180 states and 56820 transitions. [2023-12-25 08:01:48,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 34180 states and 56820 transitions. [2023-12-25 08:01:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 08:01:48,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:48,840 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, 1, 1, 1, 1, 1, 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 08:01:48,844 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 08:01:49,044 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 08:01:49,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:49,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:49,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1813340521, now seen corresponding path program 1 times [2023-12-25 08:01:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:49,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702704354] [2023-12-25 08:01:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:49,045 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 08:01:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:49,047 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 08:01:49,048 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 08:01:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:49,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:49,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:49,293 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 08:01:49,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:49,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:49,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702704354] [2023-12-25 08:01:49,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702704354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:49,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:49,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694282816] [2023-12-25 08:01:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:49,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:49,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:49,295 INFO L87 Difference]: Start difference. First operand 34180 states and 56820 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:49,902 INFO L93 Difference]: Finished difference Result 99685 states and 165612 transitions. [2023-12-25 08:01:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:49,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-25 08:01:49,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:50,051 INFO L225 Difference]: With dead ends: 99685 [2023-12-25 08:01:50,052 INFO L226 Difference]: Without dead ends: 65765 [2023-12-25 08:01:50,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 08:01:50,101 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 877 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:50,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1120 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65765 states. [2023-12-25 08:01:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65765 to 65763. [2023-12-25 08:01:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65763 states, 65762 states have (on average 1.648246707825188) internal successors, (108392), 65762 states have internal predecessors, (108392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65763 states to 65763 states and 108392 transitions. [2023-12-25 08:01:51,520 INFO L78 Accepts]: Start accepts. Automaton has 65763 states and 108392 transitions. Word has length 130 [2023-12-25 08:01:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:51,521 INFO L495 AbstractCegarLoop]: Abstraction has 65763 states and 108392 transitions. [2023-12-25 08:01:51,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 65763 states and 108392 transitions. [2023-12-25 08:01:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 08:01:51,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:51,561 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, 1, 1, 1, 1, 1, 1, 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 08:01:51,564 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 08:01:51,764 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 08:01:51,764 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:51,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1132888081, now seen corresponding path program 1 times [2023-12-25 08:01:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825804738] [2023-12-25 08:01:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:51,766 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 08:01:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:51,768 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 08:01:51,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 08:01:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:51,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:01:51,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:51,994 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 08:01:51,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:51,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:51,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825804738] [2023-12-25 08:01:51,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825804738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:51,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:51,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:51,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016398483] [2023-12-25 08:01:51,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:51,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:01:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:01:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:01:51,996 INFO L87 Difference]: Start difference. First operand 65763 states and 108392 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:52,961 INFO L93 Difference]: Finished difference Result 167971 states and 280262 transitions. [2023-12-25 08:01:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:01:52,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-25 08:01:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:53,201 INFO L225 Difference]: With dead ends: 167971 [2023-12-25 08:01:53,202 INFO L226 Difference]: Without dead ends: 113513 [2023-12-25 08:01:53,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 08:01:53,256 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 134 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:53,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 944 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113513 states. [2023-12-25 08:01:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113513 to 113511. [2023-12-25 08:01:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113511 states, 113510 states have (on average 1.6562065016298124) internal successors, (187996), 113510 states have internal predecessors, (187996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113511 states to 113511 states and 187996 transitions. [2023-12-25 08:01:55,548 INFO L78 Accepts]: Start accepts. Automaton has 113511 states and 187996 transitions. Word has length 131 [2023-12-25 08:01:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:55,548 INFO L495 AbstractCegarLoop]: Abstraction has 113511 states and 187996 transitions. [2023-12-25 08:01:55,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 113511 states and 187996 transitions. [2023-12-25 08:01:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-25 08:01:55,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:55,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:55,585 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 08:01:55,772 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 08:01:55,772 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:55,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash -522533445, now seen corresponding path program 1 times [2023-12-25 08:01:55,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:55,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909066604] [2023-12-25 08:01:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:55,773 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 08:01:55,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:55,774 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 08:01:55,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 08:01:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:56,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:01:56,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:56,254 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 08:01:56,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:01:56,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:56,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909066604] [2023-12-25 08:01:56,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909066604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:01:56,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:01:56,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:01:56,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995784906] [2023-12-25 08:01:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:01:56,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:01:56,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:01:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:01:56,256 INFO L87 Difference]: Start difference. First operand 113511 states and 187996 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:57,916 INFO L93 Difference]: Finished difference Result 336579 states and 556854 transitions. [2023-12-25 08:01:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:01:57,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-25 08:01:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:58,513 INFO L225 Difference]: With dead ends: 336579 [2023-12-25 08:01:58,513 INFO L226 Difference]: Without dead ends: 224005 [2023-12-25 08:01:58,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 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 08:01:58,764 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 831 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:58,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1122 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:01:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224005 states. [2023-12-25 08:02:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224005 to 224003. [2023-12-25 08:02:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224003 states, 224002 states have (on average 1.6428424746207624) internal successors, (368000), 224002 states have internal predecessors, (368000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224003 states to 224003 states and 368000 transitions. [2023-12-25 08:02:03,206 INFO L78 Accepts]: Start accepts. Automaton has 224003 states and 368000 transitions. Word has length 134 [2023-12-25 08:02:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:03,206 INFO L495 AbstractCegarLoop]: Abstraction has 224003 states and 368000 transitions. [2023-12-25 08:02:03,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 224003 states and 368000 transitions. [2023-12-25 08:02:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 08:02:03,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:03,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:03,256 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 (16)] Ended with exit code 0 [2023-12-25 08:02:03,453 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 08:02:03,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:03,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1112276346, now seen corresponding path program 1 times [2023-12-25 08:02:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113695300] [2023-12-25 08:02:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:03,455 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 08:02:03,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:03,457 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 08:02:03,459 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 08:02:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:03,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:03,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:04,081 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 08:02:04,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:04,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113695300] [2023-12-25 08:02:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113695300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:04,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:04,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:04,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702982949] [2023-12-25 08:02:04,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:04,083 INFO L87 Difference]: Start difference. First operand 224003 states and 368000 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:07,838 INFO L93 Difference]: Finished difference Result 665821 states and 1092708 transitions. [2023-12-25 08:02:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:07,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-25 08:02:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:09,401 INFO L225 Difference]: With dead ends: 665821 [2023-12-25 08:02:09,401 INFO L226 Difference]: Without dead ends: 443041 [2023-12-25 08:02:09,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 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 08:02:09,670 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 856 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1157 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443041 states. [2023-12-25 08:02:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443041 to 443039. [2023-12-25 08:02:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443039 states, 443038 states have (on average 1.6301400782777098) internal successors, (722214), 443038 states have internal predecessors, (722214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443039 states to 443039 states and 722214 transitions. [2023-12-25 08:02:18,612 INFO L78 Accepts]: Start accepts. Automaton has 443039 states and 722214 transitions. Word has length 135 [2023-12-25 08:02:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:18,612 INFO L495 AbstractCegarLoop]: Abstraction has 443039 states and 722214 transitions. [2023-12-25 08:02:18,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 443039 states and 722214 transitions. [2023-12-25 08:02:18,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 08:02:18,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:18,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:18,788 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 08:02:18,969 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 08:02:18,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:18,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1769362687, now seen corresponding path program 1 times [2023-12-25 08:02:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984960300] [2023-12-25 08:02:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:18,970 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 08:02:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:18,971 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 08:02:19,004 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 08:02:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:19,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:19,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:19,091 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 08:02:19,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:19,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984960300] [2023-12-25 08:02:19,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984960300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:19,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:19,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:19,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828065796] [2023-12-25 08:02:19,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:19,094 INFO L87 Difference]: Start difference. First operand 443039 states and 722214 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:25,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:25,028 INFO L93 Difference]: Finished difference Result 1049187 states and 1723208 transitions. [2023-12-25 08:02:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:25,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-25 08:02:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:27,749 INFO L225 Difference]: With dead ends: 1049187 [2023-12-25 08:02:27,749 INFO L226 Difference]: Without dead ends: 648081 [2023-12-25 08:02:28,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 08:02:28,275 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 169 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:28,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 974 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648081 states. [2023-12-25 08:02:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648081 to 630175. [2023-12-25 08:02:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630175 states, 630174 states have (on average 1.6188132166671427) internal successors, (1020134), 630174 states have internal predecessors, (1020134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630175 states to 630175 states and 1020134 transitions. [2023-12-25 08:02:41,051 INFO L78 Accepts]: Start accepts. Automaton has 630175 states and 1020134 transitions. Word has length 136 [2023-12-25 08:02:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:41,051 INFO L495 AbstractCegarLoop]: Abstraction has 630175 states and 1020134 transitions. [2023-12-25 08:02:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 630175 states and 1020134 transitions. [2023-12-25 08:02:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 08:02:41,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:41,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:41,152 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 08:02:41,349 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 08:02:41,350 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:41,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1511197249, now seen corresponding path program 1 times [2023-12-25 08:02:41,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:41,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674870499] [2023-12-25 08:02:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:41,351 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 08:02:41,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:41,352 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 08:02:41,354 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 08:02:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:41,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:41,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:41,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:41,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674870499] [2023-12-25 08:02:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674870499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:41,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761283905] [2023-12-25 08:02:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:41,605 INFO L87 Difference]: Start difference. First operand 630175 states and 1020134 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:53,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:53,334 INFO L93 Difference]: Finished difference Result 1824285 states and 2950962 transitions. [2023-12-25 08:02:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:53,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-25 08:02:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:56,757 INFO L225 Difference]: With dead ends: 1824285 [2023-12-25 08:02:56,758 INFO L226 Difference]: Without dead ends: 1196291 [2023-12-25 08:02:57,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 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 08:02:57,253 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 834 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:57,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1149 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196291 states. [2023-12-25 08:03:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196291 to 1196289. [2023-12-25 08:03:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196289 states, 1196288 states have (on average 1.601096057136743) internal successors, (1915372), 1196288 states have internal predecessors, (1915372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)