/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/eca-rers2012/Problem03_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 03:34:20,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 03:34:20,703 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 03:34:20,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 03:34:20,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 03:34:20,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 03:34:20,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 03:34:20,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 03:34:20,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 03:34:20,732 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 03:34:20,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 03:34:20,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 03:34:20,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 03:34:20,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 03:34:20,735 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 03:34:20,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 03:34:20,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 03:34:20,736 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 03:34:20,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 03:34:20,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 03:34:20,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 03:34:20,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 03:34:20,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 03:34:20,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 03:34:20,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 03:34:20,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:20,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 03:34:20,739 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 03:34:20,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 03:34:20,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 03:34:20,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 03:34:20,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 03:34:20,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 03:34:20,741 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 03:34:20,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 03:34:20,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 03:34:20,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 03:34:20,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 03:34:20,939 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 03:34:20,941 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 03:34:20,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2023-12-22 03:34:21,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 03:34:22,232 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 03:34:22,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2023-12-22 03:34:22,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fc078a4a/fa34857fc57c4e34b47857a7f55ca3e3/FLAG3445f6368 [2023-12-22 03:34:22,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fc078a4a/fa34857fc57c4e34b47857a7f55ca3e3 [2023-12-22 03:34:22,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 03:34:22,268 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 03:34:22,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:22,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 03:34:22,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 03:34:22,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:22" (1/1) ... [2023-12-22 03:34:22,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6da57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:22, skipping insertion in model container [2023-12-22 03:34:22,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:34:22" (1/1) ... [2023-12-22 03:34:22,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 03:34:22,779 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c[57439,57452] [2023-12-22 03:34:22,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:22,821 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 03:34:23,029 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c[57439,57452] [2023-12-22 03:34:23,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 03:34:23,058 INFO L206 MainTranslator]: Completed translation [2023-12-22 03:34:23,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23 WrapperNode [2023-12-22 03:34:23,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 03:34:23,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:23,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 03:34:23,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 03:34:23,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,178 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-12-22 03:34:23,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 03:34:23,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 03:34:23,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 03:34:23,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 03:34:23,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,237 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]. [2023-12-22 03:34:23,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 03:34:23,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 03:34:23,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 03:34:23,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 03:34:23,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (1/1) ... [2023-12-22 03:34:23,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 03:34:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 03:34:23,373 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) [2023-12-22 03:34:23,395 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 [2023-12-22 03:34:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 03:34:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 03:34:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 03:34:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 03:34:23,485 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 03:34:23,487 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 03:34:25,115 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 03:34:25,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 03:34:25,176 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 03:34:25,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:25 BoogieIcfgContainer [2023-12-22 03:34:25,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 03:34:25,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 03:34:25,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 03:34:25,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 03:34:25,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:34:22" (1/3) ... [2023-12-22 03:34:25,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1dfc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:25, skipping insertion in model container [2023-12-22 03:34:25,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:34:23" (2/3) ... [2023-12-22 03:34:25,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1dfc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:25, skipping insertion in model container [2023-12-22 03:34:25,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:25" (3/3) ... [2023-12-22 03:34:25,184 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2023-12-22 03:34:25,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 03:34:25,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 03:34:25,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 03:34:25,252 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;@3758be0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 03:34:25,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 03:34:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-22 03:34:25,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:25,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:25,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:25,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1341357854, now seen corresponding path program 1 times [2023-12-22 03:34:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:25,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900677751] [2023-12-22 03:34:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:25,296 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 [2023-12-22 03:34:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:25,298 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) [2023-12-22 03:34:25,308 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 [2023-12-22 03:34:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:25,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 03:34:25,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:25,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:25,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900677751] [2023-12-22 03:34:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900677751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:34:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804319369] [2023-12-22 03:34:25,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:25,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 03:34:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 03:34:25,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:25,586 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:25,635 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-22 03:34:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 03:34:25,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-22 03:34:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:25,651 INFO L225 Difference]: With dead ends: 479 [2023-12-22 03:34:25,652 INFO L226 Difference]: Without dead ends: 238 [2023-12-22 03:34:25,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 03:34:25,656 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:25,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 03:34:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-22 03:34:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-22 03:34:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-22 03:34:25,706 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 171 [2023-12-22 03:34:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:25,708 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-22 03:34:25,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-22 03:34:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-22 03:34:25,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:25,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:25,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 03:34:25,922 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 [2023-12-22 03:34:25,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:25,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1416022641, now seen corresponding path program 1 times [2023-12-22 03:34:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285542150] [2023-12-22 03:34:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:25,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:34:25,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:25,927 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) [2023-12-22 03:34:25,936 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 [2023-12-22 03:34:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:26,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:34:26,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:37,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:37,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285542150] [2023-12-22 03:34:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285542150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:37,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:37,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 03:34:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379413447] [2023-12-22 03:34:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:37,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:34:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:34:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:34:37,492 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:40,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:40,513 INFO L93 Difference]: Finished difference Result 588 states and 1007 transitions. [2023-12-22 03:34:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 03:34:40,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-22 03:34:40,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:40,517 INFO L225 Difference]: With dead ends: 588 [2023-12-22 03:34:40,517 INFO L226 Difference]: Without dead ends: 351 [2023-12-22 03:34:40,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:34:40,522 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 418 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:40,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 372 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-22 03:34:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-22 03:34:40,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-12-22 03:34:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.46) internal successors, (511), 350 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 511 transitions. [2023-12-22 03:34:40,532 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 511 transitions. Word has length 171 [2023-12-22 03:34:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:40,532 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 511 transitions. [2023-12-22 03:34:40,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 511 transitions. [2023-12-22 03:34:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-22 03:34:40,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:40,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:40,540 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 (3)] Ended with exit code 0 [2023-12-22 03:34:40,738 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 [2023-12-22 03:34:40,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:40,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1672713632, now seen corresponding path program 1 times [2023-12-22 03:34:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808912817] [2023-12-22 03:34:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:40,743 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 [2023-12-22 03:34:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:40,745 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) [2023-12-22 03:34:40,746 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 [2023-12-22 03:34:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:40,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 03:34:40,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:34:53,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:53,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808912817] [2023-12-22 03:34:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808912817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:53,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:53,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 03:34:53,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386373816] [2023-12-22 03:34:53,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:53,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 03:34:53,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 03:34:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 03:34:53,579 INFO L87 Difference]: Start difference. First operand 351 states and 511 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:56,790 INFO L93 Difference]: Finished difference Result 729 states and 1181 transitions. [2023-12-22 03:34:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 03:34:56,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2023-12-22 03:34:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:56,793 INFO L225 Difference]: With dead ends: 729 [2023-12-22 03:34:56,793 INFO L226 Difference]: Without dead ends: 492 [2023-12-22 03:34:56,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-12-22 03:34:56,795 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 231 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:56,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 385 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 03:34:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-22 03:34:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-12-22 03:34:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.340122199592668) internal successors, (658), 491 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 658 transitions. [2023-12-22 03:34:56,811 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 658 transitions. Word has length 178 [2023-12-22 03:34:56,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:56,811 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 658 transitions. [2023-12-22 03:34:56,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 658 transitions. [2023-12-22 03:34:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-22 03:34:56,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:56,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:56,815 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 [2023-12-22 03:34:57,015 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 [2023-12-22 03:34:57,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:57,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1654751361, now seen corresponding path program 1 times [2023-12-22 03:34:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860832565] [2023-12-22 03:34:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:57,022 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 [2023-12-22 03:34:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:57,023 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) [2023-12-22 03:34:57,024 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 [2023-12-22 03:34:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:57,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:34:57,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:34:57,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:57,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:57,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860832565] [2023-12-22 03:34:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860832565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:57,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154008767] [2023-12-22 03:34:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:57,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:57,285 INFO L87 Difference]: Start difference. First operand 492 states and 658 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:58,131 INFO L93 Difference]: Finished difference Result 950 states and 1413 transitions. [2023-12-22 03:34:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:58,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2023-12-22 03:34:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:58,133 INFO L225 Difference]: With dead ends: 950 [2023-12-22 03:34:58,133 INFO L226 Difference]: Without dead ends: 713 [2023-12-22 03:34:58,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:58,135 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 106 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:58,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 274 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:34:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-22 03:34:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 711. [2023-12-22 03:34:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.3647887323943662) internal successors, (969), 710 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 969 transitions. [2023-12-22 03:34:58,152 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 969 transitions. Word has length 186 [2023-12-22 03:34:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:58,153 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 969 transitions. [2023-12-22 03:34:58,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 969 transitions. [2023-12-22 03:34:58,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-22 03:34:58,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:58,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:58,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 03:34:58,355 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 [2023-12-22 03:34:58,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:58,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash 820604493, now seen corresponding path program 1 times [2023-12-22 03:34:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555422963] [2023-12-22 03:34:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:58,357 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 [2023-12-22 03:34:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:58,358 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) [2023-12-22 03:34:58,360 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 [2023-12-22 03:34:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:58,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:34:58,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-22 03:34:58,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:58,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555422963] [2023-12-22 03:34:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555422963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349141018] [2023-12-22 03:34:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:34:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:34:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:58,620 INFO L87 Difference]: Start difference. First operand 711 states and 969 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:34:59,564 INFO L93 Difference]: Finished difference Result 1577 states and 2312 transitions. [2023-12-22 03:34:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:34:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 192 [2023-12-22 03:34:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:34:59,569 INFO L225 Difference]: With dead ends: 1577 [2023-12-22 03:34:59,569 INFO L226 Difference]: Without dead ends: 1121 [2023-12-22 03:34:59,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:34:59,570 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 80 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:34:59,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 388 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:34:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-22 03:34:59,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1119. [2023-12-22 03:34:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.3926654740608229) internal successors, (1557), 1118 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1557 transitions. [2023-12-22 03:34:59,586 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1557 transitions. Word has length 192 [2023-12-22 03:34:59,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:34:59,587 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1557 transitions. [2023-12-22 03:34:59,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:34:59,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1557 transitions. [2023-12-22 03:34:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-22 03:34:59,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:34:59,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:34:59,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-22 03:34:59,792 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 [2023-12-22 03:34:59,793 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:34:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:34:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1822125543, now seen corresponding path program 1 times [2023-12-22 03:34:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:34:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010220513] [2023-12-22 03:34:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:34:59,794 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 [2023-12-22 03:34:59,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:34:59,795 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) [2023-12-22 03:34:59,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 03:34:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:34:59,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:34:59,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:34:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:34:59,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:34:59,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:34:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010220513] [2023-12-22 03:34:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010220513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:34:59,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:34:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:34:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965302158] [2023-12-22 03:34:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:34:59,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:34:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:34:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:34:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:34:59,963 INFO L87 Difference]: Start difference. First operand 1119 states and 1557 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:01,080 INFO L93 Difference]: Finished difference Result 2773 states and 4040 transitions. [2023-12-22 03:35:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:01,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 196 [2023-12-22 03:35:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:01,088 INFO L225 Difference]: With dead ends: 2773 [2023-12-22 03:35:01,088 INFO L226 Difference]: Without dead ends: 1909 [2023-12-22 03:35:01,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:01,090 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 718 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:01,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 46 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:35:01,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2023-12-22 03:35:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1905. [2023-12-22 03:35:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 1.3671218487394958) internal successors, (2603), 1904 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2603 transitions. [2023-12-22 03:35:01,116 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2603 transitions. Word has length 196 [2023-12-22 03:35:01,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:01,116 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 2603 transitions. [2023-12-22 03:35:01,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2603 transitions. [2023-12-22 03:35:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-22 03:35:01,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:01,119 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:01,133 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 [2023-12-22 03:35:01,322 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 [2023-12-22 03:35:01,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:01,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 144351892, now seen corresponding path program 1 times [2023-12-22 03:35:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:01,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695802809] [2023-12-22 03:35:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:01,326 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 [2023-12-22 03:35:01,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:01,327 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) [2023-12-22 03:35:01,327 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 [2023-12-22 03:35:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:01,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:01,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:01,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:01,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:01,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695802809] [2023-12-22 03:35:01,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695802809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:01,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:01,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362833151] [2023-12-22 03:35:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:01,473 INFO L87 Difference]: Start difference. First operand 1905 states and 2603 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:02,327 INFO L93 Difference]: Finished difference Result 4371 states and 6061 transitions. [2023-12-22 03:35:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 198 [2023-12-22 03:35:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:02,337 INFO L225 Difference]: With dead ends: 4371 [2023-12-22 03:35:02,338 INFO L226 Difference]: Without dead ends: 2721 [2023-12-22 03:35:02,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:02,340 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 201 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:02,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 251 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2023-12-22 03:35:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2721. [2023-12-22 03:35:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2720 states have (on average 1.3279411764705882) internal successors, (3612), 2720 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3612 transitions. [2023-12-22 03:35:02,372 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3612 transitions. Word has length 198 [2023-12-22 03:35:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:02,372 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3612 transitions. [2023-12-22 03:35:02,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3612 transitions. [2023-12-22 03:35:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-22 03:35:02,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:02,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:02,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:02,579 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 [2023-12-22 03:35:02,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:02,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2058015606, now seen corresponding path program 1 times [2023-12-22 03:35:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563358565] [2023-12-22 03:35:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:02,581 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 [2023-12-22 03:35:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:02,582 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) [2023-12-22 03:35:02,584 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 [2023-12-22 03:35:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:02,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:02,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 03:35:02,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:02,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:02,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563358565] [2023-12-22 03:35:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563358565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:02,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882972335] [2023-12-22 03:35:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:02,760 INFO L87 Difference]: Start difference. First operand 2721 states and 3612 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:03,606 INFO L93 Difference]: Finished difference Result 6406 states and 8632 transitions. [2023-12-22 03:35:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 211 [2023-12-22 03:35:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:03,615 INFO L225 Difference]: With dead ends: 6406 [2023-12-22 03:35:03,615 INFO L226 Difference]: Without dead ends: 3940 [2023-12-22 03:35:03,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:03,618 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:03,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 226 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2023-12-22 03:35:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3939. [2023-12-22 03:35:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3938 states have (on average 1.2491112239715592) internal successors, (4919), 3938 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 4919 transitions. [2023-12-22 03:35:03,667 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 4919 transitions. Word has length 211 [2023-12-22 03:35:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:03,667 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 4919 transitions. [2023-12-22 03:35:03,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 4919 transitions. [2023-12-22 03:35:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-22 03:35:03,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:03,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:03,674 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 [2023-12-22 03:35:03,874 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 [2023-12-22 03:35:03,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:03,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash -756904113, now seen corresponding path program 1 times [2023-12-22 03:35:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29912288] [2023-12-22 03:35:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:03,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:03,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:03,878 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) [2023-12-22 03:35:03,906 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 [2023-12-22 03:35:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:04,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:04,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:04,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:04,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:04,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29912288] [2023-12-22 03:35:04,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29912288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:04,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:04,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220607242] [2023-12-22 03:35:04,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:04,041 INFO L87 Difference]: Start difference. First operand 3939 states and 4919 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:04,929 INFO L93 Difference]: Finished difference Result 8843 states and 11250 transitions. [2023-12-22 03:35:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:04,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 219 [2023-12-22 03:35:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:04,941 INFO L225 Difference]: With dead ends: 8843 [2023-12-22 03:35:04,941 INFO L226 Difference]: Without dead ends: 5159 [2023-12-22 03:35:04,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:04,945 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:04,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 288 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2023-12-22 03:35:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5157. [2023-12-22 03:35:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 1.2081070597362296) internal successors, (6229), 5156 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 6229 transitions. [2023-12-22 03:35:05,002 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 6229 transitions. Word has length 219 [2023-12-22 03:35:05,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:05,002 INFO L495 AbstractCegarLoop]: Abstraction has 5157 states and 6229 transitions. [2023-12-22 03:35:05,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 6229 transitions. [2023-12-22 03:35:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-22 03:35:05,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:05,008 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:05,028 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 [2023-12-22 03:35:05,210 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 [2023-12-22 03:35:05,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:05,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash -824437603, now seen corresponding path program 1 times [2023-12-22 03:35:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803409394] [2023-12-22 03:35:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:05,212 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 [2023-12-22 03:35:05,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:05,213 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) [2023-12-22 03:35:05,215 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 [2023-12-22 03:35:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:05,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:05,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:05,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:05,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:05,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803409394] [2023-12-22 03:35:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803409394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:05,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:05,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644386470] [2023-12-22 03:35:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:05,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:05,470 INFO L87 Difference]: Start difference. First operand 5157 states and 6229 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:06,335 INFO L93 Difference]: Finished difference Result 12905 states and 15616 transitions. [2023-12-22 03:35:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:06,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 240 [2023-12-22 03:35:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:06,352 INFO L225 Difference]: With dead ends: 12905 [2023-12-22 03:35:06,352 INFO L226 Difference]: Without dead ends: 7585 [2023-12-22 03:35:06,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:06,357 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 166 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:06,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 292 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2023-12-22 03:35:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 7378. [2023-12-22 03:35:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 1.1157652162125524) internal successors, (8231), 7377 states have internal predecessors, (8231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 8231 transitions. [2023-12-22 03:35:06,465 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 8231 transitions. Word has length 240 [2023-12-22 03:35:06,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:06,465 INFO L495 AbstractCegarLoop]: Abstraction has 7378 states and 8231 transitions. [2023-12-22 03:35:06,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:06,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 8231 transitions. [2023-12-22 03:35:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-22 03:35:06,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:06,472 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:06,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:06,677 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 [2023-12-22 03:35:06,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:06,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1626437918, now seen corresponding path program 1 times [2023-12-22 03:35:06,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:06,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614065746] [2023-12-22 03:35:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:06,680 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 [2023-12-22 03:35:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:06,682 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) [2023-12-22 03:35:06,682 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 [2023-12-22 03:35:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:06,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:06,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:06,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:06,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:06,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614065746] [2023-12-22 03:35:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614065746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:06,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:06,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:06,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759861820] [2023-12-22 03:35:06,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:06,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:06,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:06,966 INFO L87 Difference]: Start difference. First operand 7378 states and 8231 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:08,163 INFO L93 Difference]: Finished difference Result 17973 states and 20198 transitions. [2023-12-22 03:35:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2023-12-22 03:35:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:08,204 INFO L225 Difference]: With dead ends: 17973 [2023-12-22 03:35:08,204 INFO L226 Difference]: Without dead ends: 10635 [2023-12-22 03:35:08,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:08,212 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 475 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:08,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 117 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:35:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10635 states. [2023-12-22 03:35:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10635 to 10423. [2023-12-22 03:35:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10423 states, 10422 states have (on average 1.1247361350988294) internal successors, (11722), 10422 states have internal predecessors, (11722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10423 states to 10423 states and 11722 transitions. [2023-12-22 03:35:08,339 INFO L78 Accepts]: Start accepts. Automaton has 10423 states and 11722 transitions. Word has length 256 [2023-12-22 03:35:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:08,340 INFO L495 AbstractCegarLoop]: Abstraction has 10423 states and 11722 transitions. [2023-12-22 03:35:08,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10423 states and 11722 transitions. [2023-12-22 03:35:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-22 03:35:08,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:08,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:08,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:08,552 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 [2023-12-22 03:35:08,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:08,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:08,553 INFO L85 PathProgramCache]: Analyzing trace with hash -331025794, now seen corresponding path program 1 times [2023-12-22 03:35:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:08,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332667106] [2023-12-22 03:35:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:08,555 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 [2023-12-22 03:35:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:08,556 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) [2023-12-22 03:35:08,560 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 [2023-12-22 03:35:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:08,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:08,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-22 03:35:08,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:08,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:08,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332667106] [2023-12-22 03:35:08,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332667106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:08,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:08,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:08,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853246302] [2023-12-22 03:35:08,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:08,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:08,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:08,962 INFO L87 Difference]: Start difference. First operand 10423 states and 11722 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:09,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:09,749 INFO L93 Difference]: Finished difference Result 22230 states and 25113 transitions. [2023-12-22 03:35:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:09,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 277 [2023-12-22 03:35:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:09,766 INFO L225 Difference]: With dead ends: 22230 [2023-12-22 03:35:09,766 INFO L226 Difference]: Without dead ends: 12050 [2023-12-22 03:35:09,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:09,775 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:09,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 144 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12050 states. [2023-12-22 03:35:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12050 to 12047. [2023-12-22 03:35:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12047 states, 12046 states have (on average 1.1214511041009463) internal successors, (13509), 12046 states have internal predecessors, (13509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12047 states to 12047 states and 13509 transitions. [2023-12-22 03:35:09,901 INFO L78 Accepts]: Start accepts. Automaton has 12047 states and 13509 transitions. Word has length 277 [2023-12-22 03:35:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:09,901 INFO L495 AbstractCegarLoop]: Abstraction has 12047 states and 13509 transitions. [2023-12-22 03:35:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12047 states and 13509 transitions. [2023-12-22 03:35:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-22 03:35:09,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:09,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:09,917 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 [2023-12-22 03:35:10,115 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 [2023-12-22 03:35:10,115 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:10,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2144105142, now seen corresponding path program 1 times [2023-12-22 03:35:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:10,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510630870] [2023-12-22 03:35:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:10,117 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 [2023-12-22 03:35:10,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:10,118 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) [2023-12-22 03:35:10,119 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 [2023-12-22 03:35:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:10,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:10,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:35:10,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:10,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:10,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510630870] [2023-12-22 03:35:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510630870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:10,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039791057] [2023-12-22 03:35:10,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:10,293 INFO L87 Difference]: Start difference. First operand 12047 states and 13509 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:11,107 INFO L93 Difference]: Finished difference Result 29943 states and 33496 transitions. [2023-12-22 03:35:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:11,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2023-12-22 03:35:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:11,129 INFO L225 Difference]: With dead ends: 29943 [2023-12-22 03:35:11,129 INFO L226 Difference]: Without dead ends: 18139 [2023-12-22 03:35:11,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:11,139 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 210 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:11,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 243 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18139 states. [2023-12-22 03:35:11,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18139 to 17529. [2023-12-22 03:35:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17529 states, 17528 states have (on average 1.0935645823824738) internal successors, (19168), 17528 states have internal predecessors, (19168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17529 states to 17529 states and 19168 transitions. [2023-12-22 03:35:11,312 INFO L78 Accepts]: Start accepts. Automaton has 17529 states and 19168 transitions. Word has length 300 [2023-12-22 03:35:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:11,312 INFO L495 AbstractCegarLoop]: Abstraction has 17529 states and 19168 transitions. [2023-12-22 03:35:11,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 17529 states and 19168 transitions. [2023-12-22 03:35:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-22 03:35:11,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:11,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:11,326 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 [2023-12-22 03:35:11,526 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 [2023-12-22 03:35:11,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:11,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -129043089, now seen corresponding path program 1 times [2023-12-22 03:35:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217637851] [2023-12-22 03:35:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:11,529 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 [2023-12-22 03:35:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:11,530 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) [2023-12-22 03:35:11,531 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 [2023-12-22 03:35:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:11,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:11,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-22 03:35:12,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:12,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:12,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217637851] [2023-12-22 03:35:12,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217637851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:12,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:12,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 03:35:12,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312500733] [2023-12-22 03:35:12,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:12,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:12,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:12,031 INFO L87 Difference]: Start difference. First operand 17529 states and 19168 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:12,927 INFO L93 Difference]: Finished difference Result 40103 states and 44126 transitions. [2023-12-22 03:35:12,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:12,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 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 325 [2023-12-22 03:35:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:12,953 INFO L225 Difference]: With dead ends: 40103 [2023-12-22 03:35:12,953 INFO L226 Difference]: Without dead ends: 22817 [2023-12-22 03:35:12,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:12,968 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 108 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:12,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 176 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22817 states. [2023-12-22 03:35:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22817 to 22610. [2023-12-22 03:35:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22610 states, 22609 states have (on average 1.0960679375469946) internal successors, (24781), 22609 states have internal predecessors, (24781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22610 states to 22610 states and 24781 transitions. [2023-12-22 03:35:13,184 INFO L78 Accepts]: Start accepts. Automaton has 22610 states and 24781 transitions. Word has length 325 [2023-12-22 03:35:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:13,184 INFO L495 AbstractCegarLoop]: Abstraction has 22610 states and 24781 transitions. [2023-12-22 03:35:13,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 22610 states and 24781 transitions. [2023-12-22 03:35:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-22 03:35:13,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:13,201 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:13,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:13,404 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 [2023-12-22 03:35:13,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:13,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1468425205, now seen corresponding path program 1 times [2023-12-22 03:35:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32490116] [2023-12-22 03:35:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:13,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:13,408 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) [2023-12-22 03:35:13,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 03:35:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:13,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:13,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-22 03:35:13,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:13,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32490116] [2023-12-22 03:35:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32490116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730434358] [2023-12-22 03:35:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:13,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:13,722 INFO L87 Difference]: Start difference. First operand 22610 states and 24781 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:14,547 INFO L93 Difference]: Finished difference Result 45594 states and 50145 transitions. [2023-12-22 03:35:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:14,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 325 [2023-12-22 03:35:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:14,577 INFO L225 Difference]: With dead ends: 45594 [2023-12-22 03:35:14,577 INFO L226 Difference]: Without dead ends: 24039 [2023-12-22 03:35:14,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:14,592 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 84 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:14,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 140 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24039 states. [2023-12-22 03:35:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24039 to 21395. [2023-12-22 03:35:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21395 states, 21394 states have (on average 1.0816584088996914) internal successors, (23141), 21394 states have internal predecessors, (23141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21395 states to 21395 states and 23141 transitions. [2023-12-22 03:35:14,801 INFO L78 Accepts]: Start accepts. Automaton has 21395 states and 23141 transitions. Word has length 325 [2023-12-22 03:35:14,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:14,801 INFO L495 AbstractCegarLoop]: Abstraction has 21395 states and 23141 transitions. [2023-12-22 03:35:14,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 21395 states and 23141 transitions. [2023-12-22 03:35:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-22 03:35:14,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:14,813 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:14,818 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 [2023-12-22 03:35:15,015 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 [2023-12-22 03:35:15,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:15,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash 868390102, now seen corresponding path program 1 times [2023-12-22 03:35:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683408441] [2023-12-22 03:35:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:15,018 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 [2023-12-22 03:35:15,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:15,019 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) [2023-12-22 03:35:15,022 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 [2023-12-22 03:35:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:15,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 03:35:15,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-22 03:35:15,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:15,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683408441] [2023-12-22 03:35:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683408441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:15,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:15,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477561921] [2023-12-22 03:35:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:15,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 03:35:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 03:35:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:15,222 INFO L87 Difference]: Start difference. First operand 21395 states and 23141 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:16,006 INFO L93 Difference]: Finished difference Result 39710 states and 42908 transitions. [2023-12-22 03:35:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:16,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 341 [2023-12-22 03:35:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:16,026 INFO L225 Difference]: With dead ends: 39710 [2023-12-22 03:35:16,027 INFO L226 Difference]: Without dead ends: 19370 [2023-12-22 03:35:16,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 03:35:16,041 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 204 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:16,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 254 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19370 states. [2023-12-22 03:35:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19370 to 19162. [2023-12-22 03:35:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19162 states, 19161 states have (on average 1.0730128907677052) internal successors, (20560), 19161 states have internal predecessors, (20560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19162 states to 19162 states and 20560 transitions. [2023-12-22 03:35:16,203 INFO L78 Accepts]: Start accepts. Automaton has 19162 states and 20560 transitions. Word has length 341 [2023-12-22 03:35:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:16,204 INFO L495 AbstractCegarLoop]: Abstraction has 19162 states and 20560 transitions. [2023-12-22 03:35:16,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 19162 states and 20560 transitions. [2023-12-22 03:35:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-22 03:35:16,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:16,214 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:16,216 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 (17)] Ended with exit code 0 [2023-12-22 03:35:16,416 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 [2023-12-22 03:35:16,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:16,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1491359536, now seen corresponding path program 1 times [2023-12-22 03:35:16,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:16,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925772954] [2023-12-22 03:35:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:16,419 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 [2023-12-22 03:35:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:16,420 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) [2023-12-22 03:35:16,421 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 [2023-12-22 03:35:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:16,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:16,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-22 03:35:16,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:16,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925772954] [2023-12-22 03:35:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925772954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:16,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394900162] [2023-12-22 03:35:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:16,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:16,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:16,946 INFO L87 Difference]: Start difference. First operand 19162 states and 20560 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:18,132 INFO L93 Difference]: Finished difference Result 39106 states and 41966 transitions. [2023-12-22 03:35:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:18,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 354 [2023-12-22 03:35:18,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:18,156 INFO L225 Difference]: With dead ends: 39106 [2023-12-22 03:35:18,156 INFO L226 Difference]: Without dead ends: 20187 [2023-12-22 03:35:18,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:18,170 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 394 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:18,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 161 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 03:35:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20187 states. [2023-12-22 03:35:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20187 to 19365. [2023-12-22 03:35:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19365 states, 19364 states have (on average 1.0683226606073126) internal successors, (20687), 19364 states have internal predecessors, (20687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19365 states to 19365 states and 20687 transitions. [2023-12-22 03:35:18,380 INFO L78 Accepts]: Start accepts. Automaton has 19365 states and 20687 transitions. Word has length 354 [2023-12-22 03:35:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:18,381 INFO L495 AbstractCegarLoop]: Abstraction has 19365 states and 20687 transitions. [2023-12-22 03:35:18,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 19365 states and 20687 transitions. [2023-12-22 03:35:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-22 03:35:18,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:18,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:18,392 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 [2023-12-22 03:35:18,589 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 [2023-12-22 03:35:18,590 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:18,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1185844008, now seen corresponding path program 1 times [2023-12-22 03:35:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:18,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138868920] [2023-12-22 03:35:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:18,592 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 [2023-12-22 03:35:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:18,593 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) [2023-12-22 03:35:18,594 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 [2023-12-22 03:35:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:18,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 03:35:18,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 03:35:19,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:19,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138868920] [2023-12-22 03:35:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138868920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:19,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128037674] [2023-12-22 03:35:19,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:19,595 INFO L87 Difference]: Start difference. First operand 19365 states and 20687 transitions. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:20,481 INFO L93 Difference]: Finished difference Result 41137 states and 43968 transitions. [2023-12-22 03:35:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 03:35:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 357 [2023-12-22 03:35:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:20,502 INFO L225 Difference]: With dead ends: 41137 [2023-12-22 03:35:20,502 INFO L226 Difference]: Without dead ends: 23032 [2023-12-22 03:35:20,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:20,514 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 270 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:20,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 163 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 03:35:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23032 states. [2023-12-22 03:35:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23032 to 21809. [2023-12-22 03:35:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21809 states, 21808 states have (on average 1.066030814380044) internal successors, (23248), 21808 states have internal predecessors, (23248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21809 states to 21809 states and 23248 transitions. [2023-12-22 03:35:20,715 INFO L78 Accepts]: Start accepts. Automaton has 21809 states and 23248 transitions. Word has length 357 [2023-12-22 03:35:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 21809 states and 23248 transitions. [2023-12-22 03:35:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21809 states and 23248 transitions. [2023-12-22 03:35:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-22 03:35:20,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:20,724 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:20,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:20,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:20,925 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:20,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1460074877, now seen corresponding path program 1 times [2023-12-22 03:35:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917135812] [2023-12-22 03:35:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:20,928 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 [2023-12-22 03:35:20,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:20,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:20,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 03:35:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:21,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:21,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-22 03:35:21,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:21,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:21,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917135812] [2023-12-22 03:35:21,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917135812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:21,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:21,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:21,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363227158] [2023-12-22 03:35:21,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:21,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:21,358 INFO L87 Difference]: Start difference. First operand 21809 states and 23248 transitions. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:22,421 INFO L93 Difference]: Finished difference Result 54760 states and 58348 transitions. [2023-12-22 03:35:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 361 [2023-12-22 03:35:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:22,458 INFO L225 Difference]: With dead ends: 54760 [2023-12-22 03:35:22,458 INFO L226 Difference]: Without dead ends: 34211 [2023-12-22 03:35:22,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:22,476 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 348 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:22,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 330 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:35:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34211 states. [2023-12-22 03:35:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34211 to 31158. [2023-12-22 03:35:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31158 states, 31157 states have (on average 1.06656610071573) internal successors, (33231), 31157 states have internal predecessors, (33231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31158 states to 31158 states and 33231 transitions. [2023-12-22 03:35:22,883 INFO L78 Accepts]: Start accepts. Automaton has 31158 states and 33231 transitions. Word has length 361 [2023-12-22 03:35:22,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:22,883 INFO L495 AbstractCegarLoop]: Abstraction has 31158 states and 33231 transitions. [2023-12-22 03:35:22,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31158 states and 33231 transitions. [2023-12-22 03:35:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-22 03:35:22,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:22,892 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:22,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-22 03:35:23,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:23,093 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:23,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1410329284, now seen corresponding path program 1 times [2023-12-22 03:35:23,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:23,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681125159] [2023-12-22 03:35:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:23,096 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 [2023-12-22 03:35:23,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:23,096 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:23,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 03:35:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:23,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:35:23,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 261 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 03:35:26,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:35:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 261 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 03:35:29,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681125159] [2023-12-22 03:35:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681125159] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:35:29,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:35:29,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 03:35:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590567384] [2023-12-22 03:35:29,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:35:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 03:35:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 03:35:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:35:29,178 INFO L87 Difference]: Start difference. First operand 31158 states and 33231 transitions. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:30,944 INFO L93 Difference]: Finished difference Result 61601 states and 65714 transitions. [2023-12-22 03:35:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:35:30,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 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 366 [2023-12-22 03:35:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:30,976 INFO L225 Difference]: With dead ends: 61601 [2023-12-22 03:35:30,976 INFO L226 Difference]: Without dead ends: 30686 [2023-12-22 03:35:30,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:35:30,998 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 570 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:30,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 227 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 03:35:31,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30686 states. [2023-12-22 03:35:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30686 to 30548. [2023-12-22 03:35:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30548 states, 30547 states have (on average 1.0666513896618326) internal successors, (32583), 30547 states have internal predecessors, (32583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30548 states to 30548 states and 32583 transitions. [2023-12-22 03:35:31,328 INFO L78 Accepts]: Start accepts. Automaton has 30548 states and 32583 transitions. Word has length 366 [2023-12-22 03:35:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:31,328 INFO L495 AbstractCegarLoop]: Abstraction has 30548 states and 32583 transitions. [2023-12-22 03:35:31,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30548 states and 32583 transitions. [2023-12-22 03:35:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-12-22 03:35:31,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:31,338 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:31,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:31,540 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:31,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1837943960, now seen corresponding path program 1 times [2023-12-22 03:35:31,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:31,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124751090] [2023-12-22 03:35:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:31,543 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 [2023-12-22 03:35:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:31,544 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:31,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 03:35:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:31,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 03:35:31,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 248 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-22 03:35:33,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:35:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 239 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-22 03:35:34,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124751090] [2023-12-22 03:35:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124751090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:35:34,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:35:34,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 03:35:34,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602560484] [2023-12-22 03:35:34,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:35:34,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:35:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:35:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:35:34,848 INFO L87 Difference]: Start difference. First operand 30548 states and 32583 transitions. Second operand has 9 states, 9 states have (on average 58.888888888888886) internal successors, (530), 8 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:38,419 INFO L93 Difference]: Finished difference Result 76941 states and 81986 transitions. [2023-12-22 03:35:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-22 03:35:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 58.888888888888886) internal successors, (530), 8 states have internal predecessors, (530), 0 states have call successors, (0), 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 383 [2023-12-22 03:35:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:38,468 INFO L225 Difference]: With dead ends: 76941 [2023-12-22 03:35:38,468 INFO L226 Difference]: Without dead ends: 47043 [2023-12-22 03:35:38,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2023-12-22 03:35:38,492 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1097 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 3793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:38,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 291 Invalid, 3793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3616 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 03:35:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47043 states. [2023-12-22 03:35:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47043 to 40931. [2023-12-22 03:35:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40931 states, 40930 states have (on average 1.0661617395553384) internal successors, (43638), 40930 states have internal predecessors, (43638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40931 states to 40931 states and 43638 transitions. [2023-12-22 03:35:38,982 INFO L78 Accepts]: Start accepts. Automaton has 40931 states and 43638 transitions. Word has length 383 [2023-12-22 03:35:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:38,983 INFO L495 AbstractCegarLoop]: Abstraction has 40931 states and 43638 transitions. [2023-12-22 03:35:38,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.888888888888886) internal successors, (530), 8 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 40931 states and 43638 transitions. [2023-12-22 03:35:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2023-12-22 03:35:38,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:38,998 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:39,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:39,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:39,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 186335161, now seen corresponding path program 1 times [2023-12-22 03:35:39,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:39,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412334124] [2023-12-22 03:35:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:39,203 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 [2023-12-22 03:35:39,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:39,204 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:39,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 03:35:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:39,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-22 03:35:39,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 254 proven. 16 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 03:35:41,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:35:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 247 proven. 23 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 03:35:42,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412334124] [2023-12-22 03:35:42,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412334124] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:35:42,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:35:42,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 03:35:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274509938] [2023-12-22 03:35:42,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:35:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 03:35:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 03:35:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:35:42,824 INFO L87 Difference]: Start difference. First operand 40931 states and 43638 transitions. Second operand has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:45,777 INFO L93 Difference]: Finished difference Result 121463 states and 129448 transitions. [2023-12-22 03:35:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 03:35:45,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 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 384 [2023-12-22 03:35:45,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:45,865 INFO L225 Difference]: With dead ends: 121463 [2023-12-22 03:35:45,865 INFO L226 Difference]: Without dead ends: 81182 [2023-12-22 03:35:45,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-22 03:35:45,902 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1212 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:45,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 303 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-22 03:35:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81182 states. [2023-12-22 03:35:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81182 to 57611. [2023-12-22 03:35:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57611 states, 57610 states have (on average 1.0680437424058322) internal successors, (61530), 57610 states have internal predecessors, (61530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57611 states to 57611 states and 61530 transitions. [2023-12-22 03:35:46,815 INFO L78 Accepts]: Start accepts. Automaton has 57611 states and 61530 transitions. Word has length 384 [2023-12-22 03:35:46,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:46,815 INFO L495 AbstractCegarLoop]: Abstraction has 57611 states and 61530 transitions. [2023-12-22 03:35:46,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.57142857142857) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 57611 states and 61530 transitions. [2023-12-22 03:35:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-22 03:35:46,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:46,829 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:46,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:47,032 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:47,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -763508795, now seen corresponding path program 1 times [2023-12-22 03:35:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:47,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952639822] [2023-12-22 03:35:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:47,034 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 [2023-12-22 03:35:47,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:47,035 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:47,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 03:35:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:47,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:35:47,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 277 proven. 12 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 03:35:48,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:35:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 277 proven. 12 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 03:35:50,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952639822] [2023-12-22 03:35:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952639822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:35:50,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:35:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 03:35:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138055765] [2023-12-22 03:35:50,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:35:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 03:35:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 03:35:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-22 03:35:50,029 INFO L87 Difference]: Start difference. First operand 57611 states and 61530 transitions. Second operand has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:53,103 INFO L93 Difference]: Finished difference Result 187790 states and 200966 transitions. [2023-12-22 03:35:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 03:35:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 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 390 [2023-12-22 03:35:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:53,259 INFO L225 Difference]: With dead ends: 187790 [2023-12-22 03:35:53,259 INFO L226 Difference]: Without dead ends: 130829 [2023-12-22 03:35:53,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-22 03:35:53,302 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1649 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:53,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 351 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-22 03:35:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130829 states. [2023-12-22 03:35:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130829 to 125779. [2023-12-22 03:35:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125779 states, 125778 states have (on average 1.0677065941579609) internal successors, (134294), 125778 states have internal predecessors, (134294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125779 states to 125779 states and 134294 transitions. [2023-12-22 03:35:55,443 INFO L78 Accepts]: Start accepts. Automaton has 125779 states and 134294 transitions. Word has length 390 [2023-12-22 03:35:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:55,456 INFO L495 AbstractCegarLoop]: Abstraction has 125779 states and 134294 transitions. [2023-12-22 03:35:55,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 125779 states and 134294 transitions. [2023-12-22 03:35:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-22 03:35:55,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:55,496 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:55,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:55,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:55,700 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:55,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2060820091, now seen corresponding path program 1 times [2023-12-22 03:35:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017879158] [2023-12-22 03:35:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:55,807 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:55,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 03:35:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:35:56,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:35:56,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:35:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-22 03:35:56,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:35:56,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:35:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017879158] [2023-12-22 03:35:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017879158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:35:56,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:35:56,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:35:56,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104349195] [2023-12-22 03:35:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:35:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:35:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:35:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:35:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:56,209 INFO L87 Difference]: Start difference. First operand 125779 states and 134294 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:35:57,601 INFO L93 Difference]: Finished difference Result 251712 states and 268693 transitions. [2023-12-22 03:35:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:35:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 393 [2023-12-22 03:35:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:35:57,732 INFO L225 Difference]: With dead ends: 251712 [2023-12-22 03:35:57,732 INFO L226 Difference]: Without dead ends: 126583 [2023-12-22 03:35:57,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:35:57,779 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 359 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 03:35:57,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 49 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 03:35:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126583 states. [2023-12-22 03:35:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126583 to 117245. [2023-12-22 03:35:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117245 states, 117244 states have (on average 1.0652229538398554) internal successors, (124891), 117244 states have internal predecessors, (124891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117245 states to 117245 states and 124891 transitions. [2023-12-22 03:35:59,730 INFO L78 Accepts]: Start accepts. Automaton has 117245 states and 124891 transitions. Word has length 393 [2023-12-22 03:35:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:35:59,730 INFO L495 AbstractCegarLoop]: Abstraction has 117245 states and 124891 transitions. [2023-12-22 03:35:59,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:35:59,731 INFO L276 IsEmpty]: Start isEmpty. Operand 117245 states and 124891 transitions. [2023-12-22 03:35:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-12-22 03:35:59,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:35:59,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:35:59,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 03:35:59,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:59,960 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:35:59,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:35:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash 845417200, now seen corresponding path program 1 times [2023-12-22 03:35:59,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:35:59,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37402181] [2023-12-22 03:35:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:35:59,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:35:59,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:35:59,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:35:59,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 03:36:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:00,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:36:00,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:00,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:00,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37402181] [2023-12-22 03:36:00,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37402181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:00,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:00,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 03:36:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466872216] [2023-12-22 03:36:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:00,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:00,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:00,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:00,422 INFO L87 Difference]: Start difference. First operand 117245 states and 124891 transitions. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:02,445 INFO L93 Difference]: Finished difference Result 203750 states and 216883 transitions. [2023-12-22 03:36:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 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 400 [2023-12-22 03:36:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:02,617 INFO L225 Difference]: With dead ends: 203750 [2023-12-22 03:36:02,618 INFO L226 Difference]: Without dead ends: 123803 [2023-12-22 03:36:02,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:02,662 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 310 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:02,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 343 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 03:36:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123803 states. [2023-12-22 03:36:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123803 to 117245. [2023-12-22 03:36:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117245 states, 117244 states have (on average 1.065154720070963) internal successors, (124883), 117244 states have internal predecessors, (124883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117245 states to 117245 states and 124883 transitions. [2023-12-22 03:36:04,496 INFO L78 Accepts]: Start accepts. Automaton has 117245 states and 124883 transitions. Word has length 400 [2023-12-22 03:36:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:04,496 INFO L495 AbstractCegarLoop]: Abstraction has 117245 states and 124883 transitions. [2023-12-22 03:36:04,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 117245 states and 124883 transitions. [2023-12-22 03:36:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-22 03:36:04,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:04,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:04,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 03:36:04,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:04,723 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:04,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2033840271, now seen corresponding path program 1 times [2023-12-22 03:36:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016934928] [2023-12-22 03:36:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:04,725 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 [2023-12-22 03:36:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:04,726 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:36:04,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 03:36:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:04,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:04,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-22 03:36:04,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:36:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-22 03:36:05,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:05,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016934928] [2023-12-22 03:36:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016934928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:36:05,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:36:05,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-12-22 03:36:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924263951] [2023-12-22 03:36:05,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:36:05,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 03:36:05,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 03:36:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 03:36:05,140 INFO L87 Difference]: Start difference. First operand 117245 states and 124883 transitions. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:07,747 INFO L93 Difference]: Finished difference Result 304405 states and 323948 transitions. [2023-12-22 03:36:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 03:36:07,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 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 403 [2023-12-22 03:36:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:08,066 INFO L225 Difference]: With dead ends: 304405 [2023-12-22 03:36:08,066 INFO L226 Difference]: Without dead ends: 224864 [2023-12-22 03:36:08,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-22 03:36:08,132 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 1622 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:08,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 210 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 03:36:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224864 states. [2023-12-22 03:36:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224864 to 151610. [2023-12-22 03:36:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151610 states, 151609 states have (on average 1.0644750641452685) internal successors, (161384), 151609 states have internal predecessors, (161384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151610 states to 151610 states and 161384 transitions. [2023-12-22 03:36:11,027 INFO L78 Accepts]: Start accepts. Automaton has 151610 states and 161384 transitions. Word has length 403 [2023-12-22 03:36:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:11,027 INFO L495 AbstractCegarLoop]: Abstraction has 151610 states and 161384 transitions. [2023-12-22 03:36:11,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 151610 states and 161384 transitions. [2023-12-22 03:36:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-22 03:36:11,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:11,054 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:11,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 03:36:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:11,254 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:11,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 832922492, now seen corresponding path program 1 times [2023-12-22 03:36:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265586577] [2023-12-22 03:36:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:11,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:11,258 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:36:11,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 03:36:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:11,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 03:36:11,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 316 proven. 72 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-22 03:36:12,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 03:36:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 316 proven. 72 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-22 03:36:13,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265586577] [2023-12-22 03:36:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265586577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 03:36:13,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 03:36:13,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-22 03:36:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505074796] [2023-12-22 03:36:13,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 03:36:13,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 03:36:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 03:36:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-22 03:36:13,988 INFO L87 Difference]: Start difference. First operand 151610 states and 161384 transitions. Second operand has 11 states, 11 states have (on average 41.09090909090909) internal successors, (452), 10 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:19,605 INFO L93 Difference]: Finished difference Result 448580 states and 477369 transitions. [2023-12-22 03:36:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-22 03:36:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 41.09090909090909) internal successors, (452), 10 states have internal predecessors, (452), 0 states have call successors, (0), 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 414 [2023-12-22 03:36:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:20,019 INFO L225 Difference]: With dead ends: 448580 [2023-12-22 03:36:20,019 INFO L226 Difference]: Without dead ends: 297620 [2023-12-22 03:36:20,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2023-12-22 03:36:20,103 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 3974 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3974 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:20,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3974 Valid, 581 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-22 03:36:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297620 states. [2023-12-22 03:36:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297620 to 215923. [2023-12-22 03:36:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215923 states, 215922 states have (on average 1.0635507266512907) internal successors, (229644), 215922 states have internal predecessors, (229644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215923 states to 215923 states and 229644 transitions. [2023-12-22 03:36:24,020 INFO L78 Accepts]: Start accepts. Automaton has 215923 states and 229644 transitions. Word has length 414 [2023-12-22 03:36:24,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:24,020 INFO L495 AbstractCegarLoop]: Abstraction has 215923 states and 229644 transitions. [2023-12-22 03:36:24,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 41.09090909090909) internal successors, (452), 10 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:24,021 INFO L276 IsEmpty]: Start isEmpty. Operand 215923 states and 229644 transitions. [2023-12-22 03:36:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-22 03:36:24,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:24,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:24,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-22 03:36:24,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:24,256 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:24,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash 81158733, now seen corresponding path program 1 times [2023-12-22 03:36:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:24,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329428960] [2023-12-22 03:36:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:24,259 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 [2023-12-22 03:36:24,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:24,260 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:36:24,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 03:36:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:24,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:24,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-22 03:36:24,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:24,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329428960] [2023-12-22 03:36:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329428960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:24,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:24,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069405254] [2023-12-22 03:36:24,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:24,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:24,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:24,859 INFO L87 Difference]: Start difference. First operand 215923 states and 229644 transitions. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:27,655 INFO L93 Difference]: Finished difference Result 521887 states and 555453 transitions. [2023-12-22 03:36:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:27,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 422 [2023-12-22 03:36:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:28,095 INFO L225 Difference]: With dead ends: 521887 [2023-12-22 03:36:28,095 INFO L226 Difference]: Without dead ends: 306614 [2023-12-22 03:36:28,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:28,197 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 350 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:28,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 392 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:36:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306614 states. [2023-12-22 03:36:31,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306614 to 301297. [2023-12-22 03:36:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301297 states, 301296 states have (on average 1.0629314693855876) internal successors, (320257), 301296 states have internal predecessors, (320257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301297 states to 301297 states and 320257 transitions. [2023-12-22 03:36:32,601 INFO L78 Accepts]: Start accepts. Automaton has 301297 states and 320257 transitions. Word has length 422 [2023-12-22 03:36:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:32,602 INFO L495 AbstractCegarLoop]: Abstraction has 301297 states and 320257 transitions. [2023-12-22 03:36:32,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 301297 states and 320257 transitions. [2023-12-22 03:36:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-22 03:36:32,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:32,634 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:32,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 03:36:32,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:32,835 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:32,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1739313382, now seen corresponding path program 1 times [2023-12-22 03:36:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724091382] [2023-12-22 03:36:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:32,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:32,838 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:36:32,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 03:36:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:33,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 03:36:33,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:36:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-22 03:36:33,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 03:36:33,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 03:36:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724091382] [2023-12-22 03:36:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724091382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 03:36:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 03:36:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 03:36:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178261204] [2023-12-22 03:36:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 03:36:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 03:36:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 03:36:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 03:36:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:33,392 INFO L87 Difference]: Start difference. First operand 301297 states and 320257 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 03:36:37,544 INFO L93 Difference]: Finished difference Result 820739 states and 873895 transitions. [2023-12-22 03:36:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 03:36:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 423 [2023-12-22 03:36:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 03:36:39,067 INFO L225 Difference]: With dead ends: 820739 [2023-12-22 03:36:39,068 INFO L226 Difference]: Without dead ends: 575275 [2023-12-22 03:36:39,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 03:36:39,250 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 465 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 03:36:39,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 350 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 03:36:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575275 states. [2023-12-22 03:36:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575275 to 564477. [2023-12-22 03:36:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564477 states, 564476 states have (on average 1.065802620483422) internal successors, (601620), 564476 states have internal predecessors, (601620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564477 states to 564477 states and 601620 transitions. [2023-12-22 03:36:48,131 INFO L78 Accepts]: Start accepts. Automaton has 564477 states and 601620 transitions. Word has length 423 [2023-12-22 03:36:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 03:36:48,131 INFO L495 AbstractCegarLoop]: Abstraction has 564477 states and 601620 transitions. [2023-12-22 03:36:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 03:36:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 564477 states and 601620 transitions. [2023-12-22 03:36:48,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-22 03:36:48,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 03:36:48,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 03:36:48,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-22 03:36:48,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 03:36:48,371 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 03:36:48,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 03:36:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1717138682, now seen corresponding path program 1 times [2023-12-22 03:36:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 03:36:48,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960096435] [2023-12-22 03:36:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 03:36:48,374 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 [2023-12-22 03:36:48,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 03:36:48,375 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 03:36:48,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-22 03:36:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 03:36:48,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-22 03:36:48,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 03:37:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 273 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 03:37:07,456 INFO L327 TraceCheckSpWp]: Computing backward predicates...